Code identifier window opens with a six-digit code in the number range from 1 to 4, separate lock button, up to 5 different (six-digit) user codes, blocking function if an incorrect code is repeatedly entered combined to enter, change and delete user codes admin code/user code also, this code can be used to activate or deactivate the beep without code corruption due to voltage drop/battery change works with standard aaa alkaline batteries battery life of about 2 years/15,000 shutdown cycles as well as standard m5 screws and safety screws the row is supplied with a replaceable square pin. conforms to din standard, seam size 43 mm Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.