Smart thermostat provides uniform and comfortable temperature control throughtout every room in your property. With technology, craftsmanship and quality materials to offer you a safe, reliable thermostat combined with sleek, contemporary design. Features: Smart thermostat that can be controlled by your phone before you come back home. No limit to add thermostats in APP. Compatible with Amazon Echo, Google Home and Tmall Genie. Weather, humidity and wind speed display help you decide what to wear today. Create thermostat group to centralized control and support device sharing. Amazing design opens your modern life, unltra-thin embedded panel perfectly fit the wall. 2.5D arc chamfer large backlight LCD for easy reading, touch screen to make simple operation. 5+1+1 six periods programmable maximize comfort and economy, manual or programmable mode switchable. 0.5 accuracy keeps temperature within the level you set. 1 temperature control error. Data memory when power is off, no need to worry about power failure. Specifications: Material: PC + ABS Type: Wi-Fi/ Non Wi-Fi (Optional) Voltage: AC 95-240V 50-60Hz Current Load: 16A Power Consumption:Sensor: NTC3950, 10K Accuracy: 0.5 Temperature Error: 1 Set Temp. Range: 5-45 Ambient Temp.: 0-45 Ambient Humidity: 5-95%RH (Non Condensing) Timing Error:Installation Box: European 60mm Round Box Protection Class: IP20 APP: Smartlife Item Size: 131 * 75 * 37.5mm / 5.2 * 3.0 * 1.5in Package Size: 11.0 * 9.1 * 6.1cm / 4.3 * 3.6 * 2.4in Package Weight: 260g / 9.2oz Package List: 1 * Thermostat 1 * External Sensor 2 * Screws 1 * Manual