# 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, 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/): Compare 11 single-port, multi-port and cellular serial gateways by Ethernet, Wi-Fi, 4G or LoRa connection. Y201 and Y211-L have one physical serial port. Y202/Y204/Y208 provide 2/4/8 ports; Y212 adds cellular I/O or multi-link routing. IP protocols and LoRa serial bridging use different data paths. - [MiniLink](https://www.yengear.com/products/minilink/): Compact Y201 serial gateways and selected Y301 I/O modules for control cabinets. - [Serial I/O Modules — Y301 and Y331](https://www.yengear.com/products/io-module/): Compare Y301 Modbus RTU digital and mixed I/O with 10 A relays on ControlLink models, and Y331 channel-isolated millivolt, voltage, milliamp and ampere analog inputs. - [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. ## Y406 handheld wireless control - [Y406 LoRa Wireless Controller](https://www.yengear.com/products/y406-lora-wireless-controller/): Handheld LoRa operation of relay-controlled pumps, fans, lighting and valves. Models offer 2, 4, 6, 8 or 16 control circuits with a 9–72 V DC power supply. PLC key-state access uses a separate Modbus RTU communication expansion board; confirm protocol applicability for the ordered hardware. ## 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 offers 2–16 circuits with remote switching and cloud schedules while online; local manual control requires site power. - [Smart Temporary Power Distribution Box](https://www.yengear.com/field-ready/smart-temporary-power-distribution-box/): Y952 combines mobile temporary power distribution, local electrical protection and online status monitoring and alerts. - [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. ## Project news - [YenGear Equips Orchid Greenhouse with Y951 and IoT Cloud](https://www.yengear.com/news/orchid-greenhouse-y951-iot-cloud-control/): This installation uses Y951, environmental sensors and IoT Cloud to monitor conditions and control two supplemental lighting circuits and one fan circuit. Remote control and cloud rules require the cabinet to stay online. ## 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. - [Product Documentation](https://docs.yengear.com/products/): Browse published specifications, selection guides, user manuals and technical manuals by product family. - [Product Documentation Guide for AI](https://docs.yengear.com/llms.txt): A generated directory of published product documents, with links to specifications, manuals and the machine-readable product catalog. - [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. ## Product specifications and manuals Use the specification and manual for the exact model and hardware version. Electrical ratings, wiring, communication and optional functions are model-specific. - [Smart Distribution Box Documentation](https://docs.yengear.com/products/smart-distribution-box/): Family overview and Y951, Y952 and Y953 specifications. - [Y951 Specification](https://docs.yengear.com/products/smart-distribution-box/Y951-specification): Smart Remote Control Cabinet. - [Y952 Specification](https://docs.yengear.com/products/smart-distribution-box/Y952-specification): Smart Temporary Power Distribution Box. - [Y953 Specification](https://docs.yengear.com/products/smart-distribution-box/Y953-specification): Wireless Control Cabinet. - [Serial Gateway Documentation](https://docs.yengear.com/products/serial-gateway/): Model specifications and manuals for serial communication gateways. - [Serial I/O Module Documentation](https://docs.yengear.com/products/io-module/): Selection, specifications, wiring and integration for Y301 and Y331 modules. - [Wireless I/O Module Documentation](https://docs.yengear.com/products/wireless-io-module/): Model selection, specifications and manuals for wireless I/O and controllers. - [LoRaWAN Documentation](https://docs.yengear.com/products/lorawan/): Gateway, serial DTU and I/O RTU specifications and manuals. - [Alarm System Documentation](https://docs.yengear.com/products/alarm/): Y901, Y902 and Y905 specifications. - [Data Logger Documentation](https://docs.yengear.com/products/data-collector/): Y921 specification and product overview. - [Irrigation Controller Documentation](https://docs.yengear.com/products/irrigation-controller/): Y961 specification and user manual.