Features and performances x Outstanding efficiency and overload. x Perfect management and limitation of AC sources. x Power shaving of the consumption peaks. x Automatic allocation of the power available. x Active filtering of the load steps on the genset. x Automatic protection of the sources against overload. x Powerful multi-stage PFC charger. x Ultra-short transfer time (from 0 to 15ms max.). x Automatic and efficient stand-by. x Compatible with AC coupling. x Display, programming and data logging. x RS-232 communication for remote supervision. x iPS Dim. : 44.50x20x17.2( LxWxH cm ) , 17.50 x 7.87×6.8 ( LxWxH inch) x Carton box Dim.: 53.5×30.5×30.5 (LxWxH cm) , 21.65×11.8×12 (LxWxH inch) x Weight : 25Kg ( 55lbs ) Model iPS 3700-24 Inverter Nominal battery voltage 24V Input voltage range 19 – 34V Continuous power @ 25°C 2000W Power 30 min. @ 25°C 2800W Power 25 sec. @ 25°C 5.6kVA Maximum load Up to short-circuit Maximum asymmetric load Up to Continuous power Load detection (stand-by) 2 to 25 W Maximum efficiency 86 – 90% Consumption OFF/Stand-by/ON 3W / 9W / 70W Output voltage Sine wave 220Vac (+/- 2%) / 190-245Vac Dynamic behavior 5 ms (on load change 0 to 100%) Overload and short-circuit Automatic disconnection up to 10 times restart attempt Overheat protection Warning before shut – with automatic restart Battery charger 6 step adjustable : I-U-Uo-Equalize-Uo(low)-U(periodic) Charging current adjustable 0 – 45A Maximum input voltage 265Vac Input AC voltage range Adjustable threshold from 150 to 265Vac Battery control Absorption end By duration 2 / 0.25 – 10 h or by current – / 4 – 30A Absorption voltage** 28.8 / 19 – 34V Periodic absorption voltage** 19 – 34V Floating voltage** 27.2 / 19 – 34V Reduced floating voltage 19 – 34V Equalization** By number of cycles (1 – 100) or at set interval (52 weeks) Equalization end By duration 4 / 0.25 – 10 h or by current – / 4 – 30A Deep-discharge protection 21.6 / 19 – 34V Reduced floating time 0 – 32 days Periodic absorption time 0 – 10 hours General data iPS 3700-24 Auxiliary Output 2 independent Transistor short circuit protected outputs Auxiliary Input 2 Opto Coupler Programmable Input 10V Æ 60VDC Net Weight 25Kg ( 55lbs ) Weight with the cartoon box 26.2Kg (57.5lbs) 1 Year warranty
PCE EX Online 2 KVA 1800W is a double-conversion online UPS designed to deliver continuous and stable power protection for computers, servers, and sensitive electronic equipment. It ensures uninterrupted operation during outages and unstable voltage conditions. In addition, PCE EX Online 2 KVA 1800W uses true online double-conversion technology. Therefore, it provides zero transfer time between mains and battery mode. Moreover, it delivers a pure sine wave output for safe and stable power to connected devices. Furthermore, PCE EX Online 2 KVA 1800W supports a 2kVA / 1800W load capacity. As a result, it can handle multiple devices such as PCs, routers, and small servers. It also maintains stable voltage regulation for sensitive workloads. In addition, PCE EX Online 2 KVA 1800W includes advanced protection features. Therefore, it helps protect against overload, short circuits, and power fluctuations. Moreover, it is designed for consistent performance in professional and office environments. Overall, PCE EX Online 2 KVA 1800W delivers reliable, uninterrupted, and high-quality backup power for critical systems. Specifications: 2kVA / 1800W power capacity for multiple devices Online double-conversion UPS technology Zero transfer time for uninterrupted power Pure sine wave output for safe device operation Protection against overload and voltage fluctuations
The SkyGate Mini DC UPS 20000mAh is a powerful and compact solution for uninterrupted power. Whether you need backup power for your router, modem, or other devices, this mini UPS has you covered. With a 20000mAh capacity, the SkyGate Mini DC UPS ensures your devices stay powered during outages or unexpected power cuts. This high-capacity battery provides extended usage time, keeping your essentials running smoothly. The SkyGate Mini DC UPS is designed for versatility, featuring multiple output options. It supports DC 9V/12V, USB 5V, and Type C, making it compatible with a wide range of devices, from routers to smartphones. Setting up the SkyGate Mini DC UPS is simple and hassle-free. Its plug-and-play functionality allows you to connect your devices quickly, ensuring uninterrupted power with minimal effort. The SkyGate Mini DC UPS is equipped with intelligent safety features, including overcharge protection, over-discharge protection, and short-circuit protection. These features ensure safe and reliable operation, protecting your devices from damage. Compact and portable, the SkyGate Mini DC UPS is easy to carry and store. Its lightweight design makes it perfect for use at home, in the office, or even on the go. In conclusion, the SkyGate Mini DC UPS 20000mAh offers reliable backup power with a high-capacity battery and versatile output options. Keep your devices running smoothly during power outages with this efficient and portable mini UPS. Specifications: Battery : 20000mAh Output Power : 18W POE Port : 24V/0.7A DC Port : 9V/2A, 12V/1.5A Output Ports : 5V/2A USB, 5V/1A Type-C
Powerology Portable Power Generator,140400mAh Powerology 140400mAh Power Generator 500W Pure Sine-Wave Output -45W USB-C Power Delivery -18W USB-A Quick Charge -3.1A Dual USB Optimal Charge -220V UK AC Output -750W Max Surge
Original product name: UPS 5E650IUSBDIN Eaton Line Interactive UPS 650VA / 360W, AVR, 1 Schuko (DIN) + 2 IEC, USB port, software, Input / Output jacks included for Telephone / Modem / Internet Line surge protection, 2 Years Warranty (Including Battery) 5E650IUSBDIN Eaton Line Interactive UPS 650VA / 360W, AVR, 1 Schuko (DIN) + 2 IEC, USB port, software, Input / Output jacks included for Telephone / Modem / Internet Line surge protection 2 Years Warranty (Including Battery)
The Beco GP2000 2000VA 1200W UPS delivers dependable power protection for home, office, and business systems. It supports high-demand devices like desktops, servers, and networking equipment. This UPS helps prevent data loss and sudden shutdowns during power interruptions. Users enjoy peace of mind with reliable backup. Moreover, the Beco GP2000 2000VA 1200W UPS features a 2000 VA capacity and 1200 W output power for strong performance. It maintains stable power for multiple connected devices. This helps keep critical systems running longer during outages. Reliability stays consistent. In addition, the UPS includes built-in surge protection for safe operation against voltage spikes. It guards your electronics from unpredictable power surges. This adds extra defense during storms or unstable conditions. Device safety remains a priority. Furthermore, the Beco GP2000 2000VA 1200W UPS offers automatic voltage regulation to smooth dips and spikes. It balances fluctuating power automatically. This strengthens system reliability and helps extend equipment life. Power stays steady without manual changes. Also, the UPS provides battery backup when electricity fails. You can save work and shut down systems properly before power runs out. This reduces risk of data corruption. Backup power feels dependable and secure. In addition, the Beco GP2000 2000VA 1200W UPS includes easy-to-read LED indicators for power and battery status. You can check conditions at a glance. This makes monitoring clear and simple. Users stay informed during operation. Moreover, the UPS supports multiple output sockets for connecting several devices simultaneously. This increases flexibility for desks, workstations, and server setups. You can protect many electronics at once. Furthermore, the Beco GP2000 2000VA 1200W UPS supports easy installation with plug-and-play setup. Connections are marked clearly for simple use. Setup remains quick and stress-free. Also, the compact and sturdy design fits neatly on desks or shelves. It blends into home and office spaces easily. Portability stays practical. Overall, the Beco GP2000 2000VA 1200W UPS delivers strong battery backup, surge protection, and smooth voltage regulation. This UPS is perfect for users needing powerful and reliable power protection every day. Specifications: 2000VA, 1200W, LCD, Plastic Case Input: 140-290 VAC Output: 230VAC 50/60HZ 12V 9AH *2pcs, Universal Socket *4 + EU Plug With AVR, Bypass output Overload and short circuit protection
Specifications : Le grand ups keor spx 600va 310300 UPS 600va
The Prosonic 2000mAh MINI DC UPS | GS-1018 provides stable backup power for routers, modems, CCTV cameras, ONU devices, and other low-power networking equipment during electricity outages. Its compact design fits easily beside networking devices while maintaining reliable operation for home and office setups. This mini UPS supports multiple DC output options, making it suitable for different electronic devices that require continuous power. The built-in safety protections help prevent overheating, overload, overcharging, and short circuits, which improves long-term reliability and device safety. In addition, the lightweight body allows easy placement in small spaces without adding clutter to your setup. The unit delivers dependable backup support for internet connectivity during load shedding or sudden power interruptions. Users can connect routers and communication equipment directly to maintain stable online access for work, streaming, online classes, or security monitoring systems. Key operating features include efficient power conversion, portable dimensions, and compatibility with common DC-powered devices. The Prosonic GS-1018 also offers a practical solution for users who need uninterrupted networking performance without using a large traditional UPS system. Moreover, the compact battery backup system helps reduce downtime while protecting connected devices from sudden shutdowns. Its easy plug-and-play setup makes installation simple for both home and small business users. Specifications: 2000mAh backup battery capacity for networking devices Supports routers, CCTV cameras, modems, and ONU devices Multiple DC output options for wider compatibility Built-in overload, short circuit, and overcharge protection INPUT : 100-240Vac 50/60Hz OUTPUT : 5V/9V/12V/USB port/POE port
The Twist Online High Frequency UPS 10KVA TWUP10000/HF delivers continuous backup power for servers, networking systems, and critical business equipment. It uses online double conversion technology for stable and clean power output. Additionally, the high-frequency design improves efficiency and minimizes transfer interruptions. Moreover, the UPS includes an LCD display for real-time monitoring and system alerts. It features internal 20x12V/9Ah batteries for backup operation during outages. Therefore, it helps protect sensitive equipment from voltage fluctuations and sudden power failures. Furthermore, the TWUP10000/HF supports pure sine wave output for stable operation with professional equipment. It also includes overload, short-circuit, and overheating protection for safer daily use. Additionally, the tower design fits server rooms, office environments, and IT installations easily. Specifications: 10KVA online double conversion UPS technology Internal 20x12V/9Ah rechargeable batteries LCD display for real-time monitoring Pure sine wave output for stable power delivery Overload and short-circuit protection system
Specifications : Le grand ups keor spx 2kva 2000va 1200w ups 2kva 1 year warranty
The APC Easy UPS 1200W / 2200VA BX2200MI-MS provides reliable backup power for critical devices. First, it delivers line-interactive output to protect equipment from voltage fluctuations. In addition, it safeguards connected electronics against surges, spikes, and short outages. Moreover, the UPS features a compact design for easy installation in offices or home setups. Finally, the LCD panel allows real-time monitoring of battery and load status. The BX2200MI-MS ensures uninterrupted operation and protects essential systems during power interruptions. manufacturer link Specifications: 1200W / 2200VA line-interactive output for reliable device protection Protects electronics from surges, spikes, and outages Compact design suitable for office or home setups LCD panel for monitoring battery and load status Ensures uninterrupted operation during power interruptions
Description : The Professional Series (1P/1P) – Tower is an advanced, affordable on-line double-conversion technology single-phase UPS system. Tower versions are available with 1000VA to 10000VA models and these offer high reliability for workstations, server and network equipment. The Professional Series is designed with automatic voltage regulation (AVR) to protect against power outages, disturbances and spikes. High voltage battery chargers and battery extension assembly is available for the long run time application. Key Features and Benefits True Double-Conversion Online UPS Mircoprocessor control optimizes reliability Input power factor correction Output Power Factor 0.80. Wide input voltage (110V – 300V) Converter mode available ECO mode for enegry saving (Only available for 1 – 3 KVA) Generator compatible Adjustable battery number only available for 6K and up models Smart SNMP works well with either USB or RS-232 together Emergency power off function (EPO) only available for 6K / 10K models Optional isolation transformer available. 02 Years Warranty manufacturer link
UPS PCE EXDC-2 MAX UPS Adapter for Cameras & Modems
The Beco Mini DC UPS 8800mAh delivers compact and reliable power backup for small DC devices. It offers emergency power without bulky hardware. This helps protect devices during brief outages or unstable power. Users enjoy continuous operation with confidence. Moreover, the Beco Mini DC UPS features an 8800mAh battery for extended backup time. It supports devices like routers, cameras, and small electronics. This ensures continuous functionality when mains power fails. Backup power stays dependable. In addition, the DC UPS supports automatic switching when power cuts occur. It detects outages instantly and activates backup power without delay. This keeps your devices running smoothly. Protection remains seamless and reliable. Furthermore, the Beco Mini DC UPS includes stable DC output for sensitive electronics. Power delivery stays steady even under load. This helps reduce risk of damage. Devices operate without sudden stops. Also, the UPS delivers a compact and portable design for easy placement anywhere. You can install it near devices without taking much space. This adds convenience for small homes and offices. In addition, the Beco Mini DC UPS 8800mAh supports multiple connection options for flexible use. It works with DC devices requiring uninterrupted power. Also, the compact and sturdy casing improves durability for daily use. The build feels reliable and long‑lasting. Users can trust the UPS for regular backup needs. Overall, the Beco Mini DC UPS 8800mAh delivers dependable backup power, seamless switching, and flexible use in a compact form. It is ideal for small DC devices needing continuous power and stable operation. Specifications: MINI DC UPS POE 8800mah, 17W Built-in Lithium Battery 2200mAh*4 5VDC USB output, 3*Sockets DC output Interface 5V/9V/12V Over charge, Over discharge, Overload, & Short circuit protection Microprocessor controller guaranties high reliability Multi-LED Status Indicator For: Routers, CCTVs, Modem, Wireless Phones, Monitors, PSP, and others
The PROLINK IPS5003 Inverter is designed to provide reliable backup power for homes, offices, and essential electronic devices. It helps users maintain power during outages and supports stable operation for different electrical equipment. The inverter provides a 5000VA capacity and delivers stable AC power output for compatible devices. Additionally, it supports backup power needs for appliances, computers, and other important electronics. The PROLINK IPS5003 features pure sine wave output to provide clean power for sensitive equipment. Moreover, this technology helps improve compatibility with devices that require stable electricity performance. The inverter includes an LCD display that allows users to monitor important system information. Furthermore, users can check battery status, input voltage, output voltage, and operating conditions easily. The PROLINK IPS5003 includes protection features against overload, short circuit, over-temperature, and low battery conditions. Therefore, it helps protect connected devices and improves system safety during operation. The inverter supports different backup power applications for homes and small offices. In addition, its practical design makes it suitable for users who need dependable energy support during power interruptions. The PROLINK IPS5003 Inverter combines high power capacity, pure sine wave technology, monitoring features, and protection functions. As a result, it provides a reliable backup power solution for everyday electrical needs. manufacturer link Specifications: Capacity: 5000VA Output Waveform: Pure Sine Wave Display: LCD Display Protection: Overload, Short Circuit, Over Temperature, Low Battery Protection Application: Backup Power for Home and Office Equipment
The Beco GS3000 3000VA 1800W UPS delivers powerful backup power for demanding home, office, and business setups. It supports high-performance desktops, servers, and networking systems. This UPS helps prevent data loss and sudden shutdowns during power outages. Users enjoy dependable protection while working and gaming. Moreover, the Beco GS3000 3000VA 1800W UPS offers a strong 3000 VA capacity with 1800 W output power for heavy electrical loads. It keeps multiple devices powered longer during interruptions. This improves system stability and uptime. Reliability stays consistent under heavy use. In addition, the UPS features built-in surge protection for shielding electronics against voltage spikes. It guards your devices from electrical damage. This adds extra peace of mind during storms and unstable power. Protection remains strong and consistent. Furthermore, the Beco GS3000 3000VA 1800W UPS includes automatic voltage regulation to correct lows and highs. It balances voltage without manual input. As a result, connected systems receive steady power. This helps prolong device lifespan. Also, the UPS delivers reliable battery backup when electricity fails. You can save work and safely shut down devices before the battery runs out. This prevents data corruption and interruptions. Backup support feels dependable. In addition, the Beco GS3000 3000VA 1800W UPS includes clear LED indicators for easy status checks. You can monitor power and battery conditions at a glance. Monitoring becomes simple and intuitive. Users stay informed. Moreover, the UPS supports multiple output sockets for connecting many devices. This increases flexibility for busy workstations, servers, and media setups. You can protect key electronics with one unit. Furthermore, the Beco GS3000 3000VA 1800W UPS supports plug-and-play installation without complex steps. Setup is fast and stress-free for all users. Connections remain secure and organized. Also, the sturdy and compact design fits desks, shelves, and racks without taking much space. It blends well into office and home environments. Overall, the Beco GS3000 3000VA 1800W UPS delivers strong battery backup, surge protection, and steady voltage regulation. This UPS is ideal for users who need powerful and dependable power protection daily. Specifications: 3000VA, 1800W, LCD, Metal Case Input: 145-290 VAC Output: 230VAC 50/60HZ 12V 9AH *4pcs, Universal Socket *4 + EU Plug With AVR, Bypass output Overload and short circuit protection
Prolink PRO906WS 6KVA / 4800W Online UPS with AVR is a high-performance power backup solution designed for critical devices, servers, and sensitive electronics. It provides stable and continuous power protection against outages and voltage fluctuations. It features a 6000VA (4800W) capacity with pure sine wave output. Therefore, it ensures clean and reliable power delivery for computers, networking equipment, and industrial systems. In addition, it protects devices from sudden power loss and electrical damage. The UPS uses online double-conversion technology with built-in AVR (Automatic Voltage Regulation). As a result, it delivers consistent voltage output and improves equipment safety during unstable power conditions. It supports heavy-duty usage and long backup operation depending on load. Meanwhile, its robust design makes it suitable for business, IT infrastructure, and professional environments. Prolink designs its UPS systems for reliability and protection. Therefore, this model is an ideal choice for users who need uninterrupted and stable power supply for critical operations. manufacturer link Specifications: 6000VA / 4800W high capacity Pure sine wave output Online double-conversion UPS Built-in AVR voltage regulation Ideal for servers and critical systems
Specifications : UPS Type Tower Phase Single phase with ground Rating (VA) 1000 Nominal Power (W) 800 Standard Model Dimension (mm) 282 x 145 x 220 (D x W x H) Weight (kg) 9.8 Long-run Model Dimension (mm) 282 x 145 x 220 (D x W x H) Weight (kg) 4.1 INPUT Connection Type IEC 320-C14 Nominal Voltage 200/208/220/230/240 VAC Voltage Range 110-300 VAC (Load at 50%) 160-280 VAC (Load at 100%) Frequency Range 45 ~ 70 Hz Power Factor >= 0.99 OUTPUT Connection Type 3 x Universal socket (PRO901WS) 2 x Universal socket (PRO901WL) Nominal Voltage 200/208/220/230/240 VAC Voltage Regulation ±1% Frequency Range (Synchronized Range) 47 ~ 53 Hz or 57 ~ 63 Hz Frequency Range (Batt. Mode) 50 Hz ± 0.25 Hz or 60 Hz ± 0.3 Hz Current Crest Ratio 3:1 Harmonic Distortion ≤3% THD (Linear load) ≤6% THD (Non-linear load) ALARM & INDICATORS Battery Mode Sounding every 4 seconds Low Battery Sounding every second Overload Sounding twice every second Fault Continuously sounding LCD Load level, Battery Level, AC mode, Battery mode, Bypass mode and Fault CONNECTIVITY, CONTROL & MONITORING Front panel Status LED, Function keys, LCD display Communication Smart RS232* USB Port BATTERY Standard Model Type 12V / 9Ah Numbers 2 Typical Recharge Time 4 hours recover to 90% capacity Long-run Model Type Depending on the capacity of external batteries Number 2 or 3 Charging Current (max) 1A / 2A / 4A / 6A Adjustable manufacturer link
FANTECH NS12 Laptop Stand is a portable and adjustable stand designed to improve comfort, posture, and laptop cooling. It is suitable for office work, study, and remote setups where ergonomic positioning is important. It offers 16 levels of height adjustment, allowing users to find the most comfortable viewing angle. Therefore, it helps reduce neck and shoulder strain during long hours of use. The stand is built with durable aluminum alloy for strong stability and long-term use. In addition, it supports laptops up to 15.6 inches securely. Its foldable design makes it easy to carry and store in a bag. Moreover, the included free pouch improves portability for travel and daily commuting. The open-frame structure enhances airflow around the laptop. As a result, it helps improve cooling performance during heavy use. Specifications: 16-level height adjustment system Durable aluminum alloy construction Supports laptops up to 15.6 inches Foldable portable lightweight design Free carrying pouch included
FANTECH NS10 Lifting Laptop Stand is a compact and adjustable stand designed to improve comfort and ergonomics during laptop use. It is suitable for office work, study, and home setups. It features height and angle adjustment to help users find a comfortable viewing position. Therefore, it reduces neck and shoulder strain during long working hours. The sturdy frame provides stable support for laptops of different sizes. In addition, it keeps the device secure during typing and daily use. Its open design improves airflow around the laptop. Moreover, this helps reduce heat buildup and supports better cooling performance. The stand is lightweight and easy to adjust, making it practical for everyday use. As a result, it offers a simple and effective ergonomic solution for any workspace. Specifications: Max Weight Load : 10 KG Material : Steel Size : 259 x 225 x 43mm Weight : 1440 Compatibility : Laptops or Tablets up to 17 inches
FANTECH NS10 Lifting Laptop Stand Silver is a height and angle adjustable stand designed to improve comfort, posture, and airflow during laptop use. It is suitable for office work, study, and home setups. It allows flexible adjustment of height and viewing angle to match user preference. Therefore, it helps reduce neck and shoulder strain during long working hours. The sturdy aluminum-style frame provides stable support for laptops of different sizes. In addition, it keeps the device secure during typing and daily use. Its open design improves ventilation around the laptop. Moreover, this helps reduce heat buildup and supports better cooling performance. The lightweight and foldable structure makes it easy to carry and store. As a result, it offers a practical ergonomic solution for everyday use. Specifications: Max Weight Load : 10 KG Material : Steel Size : 259 x 225 x 43mm Weight : 1440 Compatibility : Laptops or Tablets up to 17 inches
FANTECH NS11 Portable Aluminum Laptop Stand is designed to improve comfort, posture, and airflow while using a laptop. It is suitable for office work, study, and remote setups. It features an adjustable height and angle design that allows users to position their laptop at a more ergonomic viewing level. Therefore, it helps reduce neck and back strain during long working sessions. The stand is made from durable aluminum alloy for strong support and long-lasting use. In addition, it provides stable holding for laptops up to 15.6 inches. Its foldable and lightweight design makes it easy to carry and store. Moreover, the included free pouch adds convenience for travel and portability. The open structure improves ventilation and helps prevent laptop overheating. As a result, it offers a practical solution for comfortable and efficient laptop use. Specifications: Adjustable height and viewing angle Durable aluminum alloy construction Supports laptops up to 15.6 inches Foldable portable lightweight design Includes free carrying pouch
FANTECH NC21 Cooling Pad is designed to improve laptop cooling performance, comfort, and usability during long gaming or working sessions. It supports efficient airflow with a powerful dual-fan system for stable temperature control. It features large dual fans that deliver strong cooling performance across the laptop base. Therefore, it helps reduce overheating and maintain smoother system performance during heavy use. The stand includes 8 levels of height adjustment for better ergonomic positioning. In addition, it helps reduce neck and back strain by improving viewing angles. A built-in phone holder adds extra convenience for multitasking. Moreover, RGB lighting enhances the gaming setup with a stylish visual effect. Its sturdy design supports stable laptop placement while maintaining effective airflow. As a result, it combines cooling, comfort, and functionality in one setup solution. Specifications: Max Weight Load : 10 KG Material : Steel Size : 259 x 225 x 43mm Weight : 1440 Compatibility : Laptops or Tablets up to 17 inches
FANTECH NC30 Laptop Cooling Stand is designed to improve laptop cooling, comfort, and usability during long gaming or working sessions. It supports laptops up to 17.3 inches, making it suitable for both gaming laptops and professional setups. It features a detachable RGB fan that provides active cooling to reduce heat buildup. Therefore, it helps maintain stable performance during heavy workloads and extended use. The stand offers adjustable height and a 360° swivel design for flexible positioning. In addition, it improves ergonomic comfort by allowing users to find the best viewing angle. Its strong structure ensures stable support for large laptops. Moreover, the open design enhances airflow for better passive cooling efficiency. The RGB lighting adds a stylish gaming aesthetic to any setup. As a result, it combines performance, comfort, and visual appeal in one cooling solution. Specifications: Detachable RGB cooling fan Adjustable height ergonomic design 360° swivel rotation base Supports laptops up to 17.3 inches Enhanced airflow cooling structure
