Features: APP Control: the WiFi version smart thermostat can be remotely controlled by your mobile devices (cell phone, tablet and computer) before you come back home. (APP: Smart Life, and make sure your phone is connected to 2.4GHz WiFi) Appearance: Frameless acrylic panel design, simple and elegant. Classic black/white color scheme, seamlessly integrated. Touch buttons to make simple operation. LCD Touch Display: LED display, more friendly interface, LED matrix light, simple display, energy saving, protect your eyes. Accurate Temperature: High precision sensors, up to 1 accuracy keeps temperature within the level you set. Memory Function: Power off protection, save all your settings safely Weekly Programmable: Preset adjustment of 5+1+1 mode in a week, programmable setting of 6 time periods a day, green energy saving, Less cost, more intelligent and environmental protection Easy to Install: Interlock to connect gives you easy installation. The ultra-thin embedded panel perfectly fits all kinds of walls, The visiable thickness above the wall is only 12.4mm Specifications: Model: GA / GB / GC (Optional) Shell Material: PC + ABS (Fireproof) Power Supply: 95-240VAC, 50-60Hz or 24V DC/AC, 50-60Hz (Please check the information laser printed on the back of the thermostat for the actual voltage) Current Load: 5A (water heating, gas boiler), 16A (electric heating) Sensor: NTC3950, 10K Accuracy: ±1 Set Temp. Range: 5-35 / 41-95 Room Temp. Range: 5-70/41-158 Display Temp. Range: 5-70/41-158 Ambient Temp: 0-45/32-113 Ambient Humidity: 5-95%RH (Non-Condensing) Storage Temp: 0-45/32-113 Power Consumption: 1.5W Timing Error: 1% Protection Class: IP20 Buttons: Capacitive Touch Buttons Wire Terminals:Wire 2 x 1.5mm² or 1 x 2.5mm² Item Size: 8.8 * 8.8 * 5cm / 3.46 * 3.46 * 1.97 inch Item Weight: 154g / 5.43oz Package Size: 11 * 9.7 * 6.6 cm / 4.33 * 3.82 * 2.6 inch Package Weight: 271g / 9.56oz Package List: 1 * Thermostat 2 * Install Screws 1 * External sensor (only available in GB electric heating, but not in GA and GC) 1 * User Manual (English)