Features:Smart thermostat that can be controlled by your phone before you come-back. No need to worry about power failure, data memory when power off. Large LCD screen display with back light, easy to read. Easy to set schedules, temperature (-40~110/ -40~230), and countdown timer with your smartphone. Suitable for electric heating/water gas boiler/water heating.Perfect for home, office, shopping mall, hotel, etc. Specifications:Material:ABSType:WTAC,WTACWTemperature measurement range: -40~110/ -40~230Precision: 0.1Output type: 110~220V-ACWorking temperature: 60 ()Size:Approx.5.2x3.4x9.7cm/2.05''x1.34''x 3.82'' Note:Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x WiFi Thermostat