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: 51mm round display area helps to protect your eyes, touch screen to make simple operation. Integrated with Echo, Google Home and Tmall Genie. Create thermostat group to centralized control. 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. Keypad locking function. Data memory when power is off, no need to worry about power failure. 86mm hidden box and European 60mm round box is suitable. Amazing silver frame opens your modern life, simple yet stylish to integrate with your home. Specifications: Color: White / Black / Champagne (Optional) Shell Material: PC + ABS (Fireproof) Display: LCD with Backlight Sensor: NTC 10K Power Supply: 95 ~ 240 VAC, 50 ~ 60Hz Current Load: 16A Power Consumption: <1.5W Accuracy: 0.5C Timing Error: <1% Set Temp. Range: 5 ~ 35C Display Temp. Range: 5 ~ 99C Support System: For iOS 8.0 and higher or for Android 4.1 and above Ambient Temperature: 0 ~ 45C Ambient Humidity: 5 ~ 95% RH (Non Condensing) Storage Temperature: -5 ~ 45C Installation Hole Distance: 60mm Installation Box: 86 * 86mm Square or European 60mm Round Box(Not Included) Wire Terminals: Wire 2 * 1.5mm or 1 * 2.5mm conservation: IP20 Item Size: 90 * 90 * 38mm / 3.54 * 3.54 * 1.50in Item Weight: 143g / 5.04oz Package Size: 11.0 * 9.5 * 6.0cm / 4.33 * 3.74 * 2.36in Package Weight: 245g / 8.64oz Package List: 1 * Thermostat 1 * 2.5m External Sensor 2 * Mounting Screws 1 * User Manual(English)