# YenGear > YenGear is an industrial IoT manufacturer and solution provider specializing in data acquisition, transmission, and equipment control. We offer industrial gateways, I/O modules, and control systems, along with YenGear IoT Cloud for real-time monitoring, remote control, alerts, and API integration. We also provide hardware and software customization to meet specific project requirements. The public brand is YenGear. The operating company is Hunan YenGear Tech Co., Ltd. This index covers the English website and links to technical documentation, the Online Shop and project inquiries. Use the product-family pages to compare models, then consult the specific model page and its linked specification or manual for interfaces, electrical ratings, frequency plans and software options. Cloud and API capabilities depend on the selected device and integration. For pricing and lead times, use the Online Shop or project inquiry. ## Main pages - [Home](https://www.yengear.com/): Industrial IoT connectivity, data acquisition, monitoring and control. - [Products](https://www.yengear.com/products/): Compare serial gateways, Serial I/O Modules, Remote I/O Modules, Wireless I/O Modules, LoRaWAN Products and Field-Ready systems. - [Applications](https://www.yengear.com/applications/): Published solution pages for greenhouses, aquaculture, pig farms, irrigation, cold storage, industrial parks, tunnels and AI data-center cooling. - [About YenGear](https://www.yengear.com/about-us/): Company introduction, industrial IoT capabilities and hardware and software customization. - [IoT Cloud](https://www.yengear.com/iot-cloud/): Real-time monitoring, remote control, rules, records and API, MQTT and Webhook integration. Device connection and offline behavior depend on the project configuration. ## Product families - [Serial Gateways](https://www.yengear.com/products/serial-gateway/): Connect serial equipment through 4G, Wi-Fi, Ethernet or LoRa. Y201 models have one physical serial port with interface options; other models offer different port counts and network functions. - [MiniLink](https://www.yengear.com/products/minilink/): Compact Y201 serial gateways and selected Y301 I/O modules for control cabinets. - [Y301 Serial I/O Modules](https://www.yengear.com/products/io-module/): Compare digital-input, relay-output and selected analog-input models over RS485 Modbus RTU, with model-specific interface, signal and power options. - [Y311 Remote I/O Modules](https://www.yengear.com/products/remote-io-module/): Compare relay-only and combined digital-input/relay-output models, with Wi-Fi or Ethernet variants. - [Y401, Y402 and Y403 Wireless I/O Modules](https://www.yengear.com/products/wireless-io-modules/): Compare private LoRa point-to-point, one-to-many and multi-node dry-contact-to-relay control. The control link needs no SIM, Internet connection or LoRaWAN gateway; range depends on the model, configuration and site conditions. - [LoRaWAN Products](https://www.yengear.com/products/lorawan/): Compare Y501-L and Y511-L gateways, Y502-L serial DTU and Y503-2220-L I/O RTU. LoRaWAN uses a gateway and Network Server, with model-specific regional frequency plans. - [Smart Distribution Box](https://www.yengear.com/products/smart-distribution-box/): Compare Y951, Y952 and Y953 by control task, network, circuit, power and site conditions. ## LoRaWAN models - [Y501-L LoRaWAN Indoor Gateway](https://www.yengear.com/products/y501-l-lorawan-gateway/): Forward LoRaWAN packets to a Network Server through Ethernet or Wi-Fi. 4G backhaul and local Network Server / Application Server (NS/AS) software are options. - [Y511-L LoRaWAN Indoor Edge Gateway](https://www.yengear.com/products/y511-l-lorawan-edge-gateway/): Connect LoRaWAN device data to PLCs and applications. Local payload processing and Modbus TCP/RTU mapping require the corresponding local NS/AS software configuration. - [Y502-L LoRaWAN Serial DTU](https://www.yengear.com/products/y502-l-lorawan-serial-dtu/): Connect serial equipment through one isolated RS485 and one isolated RS232 interface, with configured polling or transparent transport over LoRaWAN. No onboard I/O channels. - [Y503-2220-L LoRaWAN I/O RTU](https://www.yengear.com/products/y503-2220-l-lorawan-io-rtu/): Connect two digital inputs, two switched voltage outputs, one 0–10 V input, one 4–20 mA input and isolated RS485 through LoRaWAN. Outputs follow the RTU supply voltage; they are not dry relay contacts. There is no analog output. ## Field-Ready systems and project customization - [Field-Ready Products](https://www.yengear.com/field-ready-products/): Compare Y921 data acquisition, Y901/Y902 alarm linkage, Y905 remote alarm, Y951 circuit control, Y952 temporary-power distribution and Y953 local LoRa control. - [RS485 Cloud Data Logger](https://www.yengear.com/field-ready/data-logger/): Y921 four-port Modbus RTU data acquisition with 4G, Wi-Fi or Ethernet uplink models. - [Industrial Alarm Systems](https://www.yengear.com/field-ready/industrial-alarm-systems/): Y901 integrated linkage, Y902 modular linkage and Y905-G 4G remote audible-visual alarm. - [Smart Remote Control Cabinet](https://www.yengear.com/products/smart-remote-control-cabinet/): Y951 connected remote control and scheduling for 2–16 circuits. - [Smart Temporary Power Distribution Box](https://www.yengear.com/field-ready/smart-temporary-power-distribution-box/): Y952 temporary-power distribution, local electrical protection and connected monitoring. Local protection devices handle electrical protection. - [Wireless Control Cabinet](https://www.yengear.com/field-ready/wireless-control-cabinet/): Y953 local LoRa control between a controller and distributed cabinets. - [Y961 Wi-Fi Irrigation Controller](https://www.yengear.com/field-ready/irrigation-controller/): The four-output version connects to the Smart Irrigation Control System for zone scheduling. Outputs switch the input power. Published schedules execute locally while the device clock is valid; irrigation stops more than 24 hours after the last successful time sync. - [Custom Smart Distribution Box](https://www.yengear.com/smart-distribution-box-custom/): Project review for non-standard circuits, loads, control logic, monitoring, alarms, communication and enclosure requirements. ## Published application solutions - [Smart Greenhouse](https://www.yengear.com/applications/smart-greenhouse-environmental-control/): Greenhouse climate monitoring and control for fans, irrigation and lighting. - [Smart Aquaculture](https://www.yengear.com/applications/smart-aquaculture-monitoring-and-control-solution/): Water-quality monitoring, aerator and pump control, weather context and on-site alarm planning for aquaculture sites. - [Smart Pig Farm](https://www.yengear.com/applications/smart-pig-farm-environmental-control-solution/): Barn environmental monitoring, LoRa networking and equipment control. - [Smart Irrigation](https://www.yengear.com/applications/intelligent-irrigation-wireless-control/): Wireless control for pumps, zone valves and field sensors. - [Smart Cold Storage](https://www.yengear.com/applications/smart-cold-storage-solution/): Cold-room condition monitoring, circuit control, alarms and operating records. - [Industrial Park Monitoring](https://www.yengear.com/applications/industrial-park-environmental-monitoring-solution/): Distributed environmental monitoring, alerts and reporting. - [Tunnel and Corridor Safety](https://www.yengear.com/applications/tunnel-and-corridor-emergency-monitoring-solution/): Emergency monitoring, equipment linkage and response records for long routes. - [AI Data Center Cooling](https://www.yengear.com/applications/ai-data-center-cooling-interlock-solution/): Cooling equipment monitoring, safety interlocks and BMS, PLC or platform integration. ## Technical knowledge guides - [LoRa Frequency Bands Worldwide](https://www.yengear.com/blog/global-lora-frequency-bands/): Regional plans, AS923 sub-plans, local spectrum rules and deployment checks. - [What Is LoRaWAN?](https://www.yengear.com/blog/lorawan-explained/): Devices, gateways, servers, classes, activation, security and practical limits. - [Global 4G LTE Bands Explained](https://www.yengear.com/blog/global-4g-lte-bands-explained/): Understand LTE bands, duplex modes, device categories and operator compatibility. - [Global Mains Voltage and Plug Types Guide](https://www.yengear.com/blog/global-mains-voltage-plug-types-guide/): Check country voltage, grid frequency and plug shape before connecting equipment or selecting a power accessory. ## Documentation, purchasing and support - [English Technical Documentation](https://docs.yengear.com/): Product specifications, user manuals, protocol information and integration guides. Model pages link to the relevant documents. - [IoT Cloud Open API](https://docs.yengear.com/open-api-v2/): API documentation for projects, devices, data points and historical data. - [Online Shop](https://store.yengear.com/): Product listings and purchasing options. - [FAQ](https://www.yengear.com/faq/): General product-selection, communication, cloud and integration questions. - [Project inquiry](https://www.yengear.com/feedback/?intent=project-solution&source_cta=llms-contact): Share the application, interfaces, loads, power supply, network and installation conditions for project review or product selection.