Features 1、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: TuyaSmart / Smart Life, and make sure your phone is connected to 2.4GHz WiFi) 2、LCD Touch Display: elegant appearance, one face designed with touch control panel, anti-scratch. 3.1-inch large LCD display screen with backlight, easy to operate and read. 3、Children Lock: keypad locking function is designed to prevent children from operating by mistake, press and hold the +- key for more than 5 seconds to lock/unlock the thermostat. 4、5+1+1 Six Periods Per Day Programming: the thermostat supports different temperature setting accordingly with 6 time-modes daily, 5+1+1((1-5, 6, 7)) weekly programmable mode. 5、Accurate Temperature: external(electric heating only) and internal sensors allow control of both room and floor temperatures, NTC temperature sensor, with ±1°C accuracy. 6、Application: suitable for controlling electric underfloor or water heating or water/gas boiler system. It helps to drive down home energy costs, perfect for home, school, office, hotel, hospital, shopping mall, etc. Specification Specifications: Shell Material: PC+ABS (Flame retardant) Temperature Sensor: NTC 3977 10K Temperature Accuracy: ±1℃ Power Consumption: <1.5W Timing Error: <1% Voltage: 95~240VAC, 50~60Hz Key: Touch key Ambient Temperature: 0~45℃, 5~95%RH(non condensing) Storage Temperature: -5~55℃ Installation Hole Distance: 60mm Suitable for Installation: 86 box or European 60mm round box Item Size: 86 * 86 * 40mm / 3.39 * 3.39 * 1.57in Item Weight: 160g / 5.66oz Package Weight: 262g / 9.26oz Package Size: 9.6 * 9.6 * 6cm / 3.78 * 3.78 * 2.36in Package List 1 * Thermostat 2 * Screw 1 * Manual (English)