187a Type in the numerical user code on the keyboardand press confirm "*"7b The keyboard will emit a beep for 2 secondsand the green LED will light up.7c The green LED "L1" will light up on the interfaceThe code has been accepted!7d Press A-B-C or D in the right-hand column of the keyboard (e.g. "C")Activation has been carried out!7e After 5 seconds of inactivity a beep will sound.The green LED will switch off and you will quit the user code mode.7. Activating a user codeL1ON*80947*D12 36BCONL1OFFc158694BC