311Z is a thermostat that uses the Zigbee communication protocol, so the 1311Z thermostat requires a Zigbee Gateway as a bridge for network connection. After connecting the mobile phone to the Zigbee Gateway, follow the app instructions to connect the 1311Z thermostat, allowing control of the 1311Z thermostat in each room via the mobile app. Compatible with 4-wire and 6-wire systems. Independently developed software with OTA upgrade capability. Power monitoring function for energy savings. External sensor for accurate temperature measurement. Multiple modes: manual mode, programming mode, and ECO mode. Voltage: 110-230V AC 50Hz Rated current: 15A Operating temperature: 5-40C, for indoor use only Storage temperature: -20 to 70C Communication protocol: IEEE 802.15.4, Tuya Zigbee Radio frequency range: 2.4GHz Temperature sensor: B=3950, R25=10K1% Protection level: IP20 Compatibility: Compatible with all Class 1 electric radiators equipped with pilot wire technology Note: Professional installation is strongly recommended. Please verify the product specifications to ensure compatibility. Product updates may occur; actual product may vary slightly in appearance or color due to different batches, which does not affect functionality. Color: White Material: Plastic Package Contents: 1 x Tuya ZigBee Smart Thermostat Only the above package content is included; other items are not part of the package. Note: Lighting and display differences may cause slight variations in color between the image and the actual product. Measurement error allowed: 1-3 cm.