Safety Features:Equipped with a Child Lock function to prevent accidental adjustments and energy waste, prioritizing safety. User-Friendly App Control:Customize settings and monitor temperatures remotely via the intuitive App, available in 9 languages. Versatile Heating Compatibility:Supports water heating, electric heating, and boiler systems, catering to diverse home heating needs. Energy Efficient:Energy Saving Mode reduces electricity bills by up to 20%, ensuring a and cost-effective heating experience. Thermostat|Star Ring Thermostat|ZigBee Smart Control:Seamlessly integrates with and for voice-activated comfort, powered by ZigBee for reliable smart home automation. Color: Black Material: plastic Package Contents: 1*Smart Knob Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.