Smart Tuya ZigBee Radiator Actuator Thermostat: Compact design with a clear LCD display. Powered by two AA batteries (not included). Designed for use with heating radiators and underfloor heating systems to control water flow in pipes. Manually set desired indoor temperature. MQTT setup supported. A Tuya ZigBee Wireless Gateway Hub is required: The valve must be used with a compatible ZigBee hub to connect and coordinate with other ZigBee smart devices in your home. Add the gateway to the Tuya/Smart Life app first, then add the radiator actuator to the gateway via the app. Programmable Weekly Schedule: Supports 5+2, 6+1, and full-week scheduling with up to 6 time periods per day. Includes holiday mode, auto mode, and boost mode. Choose separate settings for weekdays and weekends. Remote and Voice Control: Control remotely via the Tuya/Smart Life app on your smartphone. Compatible with voice assistants — Alexa and Google Assistant — when connected through the Tuya ZigBee gateway. Open Window Detection: Automatically detects rapid temperature drops. If room temperature falls below the defined threshold, the valve closes for 15 minutes. If the temperature remains below the threshold after this period, the valve stays closed. Digital temperature display shows Celsius readings. Specifications: Power: 2 × AA 1.5V LR6 batteries (not included) Operating Temperature: -10°C to 40°C Temperature Accuracy: ±0.7°C Temperature Range: 5°C to 30°C Thread Size: M30×1.5 mm Color: Black Material: PC (polycarbonate) Package Includes: 1 × Thermostat 6 × Adapters Note: Slight variations in appearance may occur due to production batches. Color representation may vary slightly depending on screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.