Intelligent Thermostat WiFi Smart Square Furnace Heating Controller with LCD Touch Screen for Home AC85V‑250V Item Type: Intelligent Thermostat Material: ABS Model: MH1823L Basic Parameters: Power Supply: AC85V 265V 50 60Hz Power Consumption: <2W Load Current: ≤3A Display Temperature: Range -20 to 95°C -4 to 203°F Control Accuracy: ±1℃ ℉ Temperature Sensor: NTC Set Temperature Range: 5 to 50℃ 41 to 99℉ Display Mode: LCD display Connection Mode: Wireless WIFI (2.4GHz) Dual Operation: Touch button control, APP remote control How e1. Switching On And Off: Press the Power On button to switch on the device in the off state, and press the Power On button to switch off the device in the on state, press and hold the Power On button for 10 seconds in the on state to restore the system to factory values. Setting. 2. Clock Setting: In the power on state, press the Clock key with the minutes flashing, press the ^ key or the V key to set the minutes, press the Clock key again with the hours flashing, press the V key to set the minutes. Press the Clock key again and the hour flashes, press the ^ key or the V key to set the hour, press the Clock key again and the week flashes, press the ^ key or the V key to set the hour. Press the ^ key or V key to set the day of the week, press the clock key again to exit, you can press the M key directly to exit or to exit automatically after 20 seconds of no operation. No need to set the time after networking, the device will update the time automatically. 3. Setting Temperature: In the power on state, press ^ to increase the setting temperature, short press v to decrease the setting temperature. 4. Child Lock Operation: In the power on state, press and hold the ^ key and press v for 5 seconds to open the child lock function, press and hold the ^ key again and press v for 5 seconds to unlock the lock. The lock symbol is displayed when the child lock is locked and not when it is unlocked. 5. In the power on state M button can switch between manual mode or automatic mode. Press and hold the M button for 5 seconds to enter the leave mode setting.