<p>Wi-Fi Smart Thermostat Model: TJ-919E</p><p>Weight:NT:140g WT: 280g</p><p>Dimension:123 x 85 x 26 mm Package: 203 x 123 x 38 mm</p><p>Color: White</p><p>Material: ABS+PC</p><p>Screen: 2.8” TFT- LCD 320x280 pixels</p><p>Nightlight:Programmable White LED (3200K~3500K)</p><p>Power Source: 24V-AC (20V~30V AC), 5V-DC</p><p>TemperatureSetting Range: 40°~99°F (5°~37°C)</p><p>Working Temp.: 32°~110°F (0°~ 43°C)</p><p>Working Humidity: <90% non-condensing max.</p><p>Wi-Fi Standard: IEEE 802.11B/G/N (2.4G)</p><p>Wi-Fi Connected Range: <50 Meters in Open Area Sensor: Temperature, Humidity </p></br></br></br><p>ProductFeatures：</p><p>2-H, 2-C, Heat Pump, Emerg. Heating</p><p>7 Day / 8 Period Programming</p><p>Temperature Range Setting</p><p>Temporary/Permanent Hold</p><p>Wi-Fi Auto Reconnect Wi-Fi</p></br></br></br><p>App/Cloud Features:</p><p> One Account Multiple Device Access</p><p> Compatible with Amazon Alexa/ Google Assistance</p><p> Different Setting for Each Day,8 Periods per Day</p><p> Environment Friendly no Battery </p><p> Required C-Wire</p></br><p>*** When you get the device,please check the setup video,then you will know how to connect the phone and thermostat:https://www.youtube.com/watch?v=pPtL2sefeFI&t=34s; ***</p>