In normal mode, press and hold TEMP + OK together for 3 seconds to lock all buttons.

• The 🔒 icon will appear on the screen.

• The device enters a locked state – key presses will only turn on the backlight but will not activate any functions.

• The 🔒 icon will flash when a key is pressed.

To unlock:

• Press and hold TEMP + OK again for 3 seconds.

• If no PIN is set or PIN is not applied to child lock – the unit will unlock immediately.

• If PIN is applied to child lock:

• The screen will display "0000".

• Enter the code:

• OK moves to the next digit.

• BACK returns to the previous digit.

• After the last digit, press OK to confirm:

• If correct – the unit unlocks and returns to normal mode.

• If incorrect – display resets to "0000" and requests entry again.