The LinkedGo ST802-B is a smart HVAC thermostat that provides full control over various heating, ventilation, and cooling systems. Thanks to the integration of the ShellyX chip, the device is compatible with the Shelly ecosystem, allowing for remote control, automation, and easy integration with the most popular smart home platforms. The thermostat is suitable for controlling underfloor heating, fan coil units, ventilation systems, and cooling solutions. Thanks to the built-in Shelly IoT chip, it supports both Wi-Fi and Bluetooth connections and does not require a separate hub. It can be paired directly with the Wi-Fi network and is compatible with the Shelly cloud system. Like other Shelly products, it can also operate without the factory cloud in local mode and be integrated with a range of smart home platforms and hubs via REST API and MQTT integration. It supports the RS485/MODBUS interface, making it easily integrable into larger HVAC systems. The device supports smart scheduling, frost protection, and the connection of external temperature and humidity sensors, ensuring accurate and efficient climate control. About the LinkedGo brand LinkedGo is an innovative company specializing in the development and manufacturing of smart HVAC solutions. Their products aim to create a comfortable and energy-efficient home environment by integrating the latest technologies and user-friendly design. The Shelly LinkedGo product line is a “Powered by Shelly” series, thanks to the built-in Shelly IoT chip, making it a perfect fit for the Shelly smart home system and compatible with many popular smart home platforms. Main Product Features Underfloor heating control Direct control of water-based underfloor heating valves. Electric underfloor heating support Controlled via external Shelly relay. Fan coil unit control AC and DC fans, including 10V DC systems. Ventilation control Precise control via analog output. Heat source integration Control of gas and pellet boilers via dry contact relay. Built-in humidity sensor Support for external temperature sensors for more accurate climate control. Frost protection function Prevents freezing of heating pipes. Precision calibration Fine-tuning of temperature and humidity measurements for maximum accuracy. Smart scheduling Automation of heating and cooling based on schedules or sunrise/sunset. No hub required, as it can be paired directly with the Wi-Fi network. Smart Home Protocols and Platform Compatibility Supported protocols: Wi-Fi, Bluetooth, RS485/MODBUS Local remote control: Also equipped with a Bluetooth gateway, allowing pairing with Shelly wireless wall-mounted Bluetooth switches and remotes. Factory platform: Shelly Smart Control app Compatibility with third-party platforms:Home Assistant, Homey, SmartThings Integration options: RS485/MODBUS interface for larger HVAC systems Smart Features Remote control via Wi-Fi or Bluetooth connection. Smart scheduling Based on daily routine or sunrise/sunset. Frost protection function Prevents damage to the heating system at low temperatures. Accurate measurement Support for external temperature and humidity sensors. Automation Integration with various smart home platforms and protocols. Electrical Features Power supply: 110–240 V AC / 50–60 Hz Energy consumption: < 1 W RS485/MODBUS interface: Yes Dry contact relay: Yes, for boiler control Other Specifications Dimensions: 86.8 x 86.8 x (14 25.5) mm Color: Black Material: Plastic Operating temperature: -10~55℃ Operating humidity: 30% to 70% RH Memory: 8 MB Wi-Fi range: Up to 50 m outdoors and 30 m indoors (depending on building materials) Bluetooth range: Up to 10 m indoors and 30 m outdoors
