How to turn on child lock on the Mijia Air Conditioner Pro Eco 5-Star 1 PK Inverter?

The main purpose of the child lock function is to prevent children from accidentally touching the air conditioner’s remote control to avoid unnecessary operation or adjustment. When the child lock is enabled, the air conditioner’s functions on the remote control will be locked, making it impossible to change the settings. It also prevents the risk of device damage due to pressing the wrong buttons or touching sensitive areas.
To turn on child lock on the Mijia Air Conditioner Pro Eco 5-Star 1 PK Inverter, please refer to the following method:
Simultaneously press and hold the + and - buttons for more than 3 seconds to enable or disable the child lock function of the remote control.