Remote Control: This kind of thermostat is designed in wireless style, it can be controlled by voice and phone application, free your hands and make your life easier. Touch screen: large LCD screen makes it easy to operate, you can set the mode by touching the board, not easy to ci disturb. The package includes: 1 piece smart thermostat. Technical data: Material: PC. Color: show as pictures. Size: approx. 86x86x40mm or 3.39x3.39x1.57 in. Voltage: 110-230 V AC, 50 or 60 HZ. Current load: 16A or 3A or 3A. Temperature accuracy: 1 ℃. Temperature range: 5-95 ℃. Button: touch control. Type 1: WT81 16A Electric heating. Type 2: WT81 3A Water Heater or Boiler. Type 3: NW-WT81 16A electric heater. Type 4: NW-WT81 3A water heater or boiler. Since the thermostat has a glass mirror panel, the color can change under different conditions. Once installed on the wall and turned on, it fades to black. Due to the difference in light and screen, the color of the item may be slightly different from the color in the picture. The package includes: 1 piece smart thermostat.