The buzzer sounds safe, c is good. In contrast to enable or disable, you must enter his code. It's been a horrible noise. Also, you have to press 4 to arm the alarm. However there is no indication that the alarm is armed. No certainty that the alarm is activated. Also no possibility of fixing the switch with screws which is sold with double-sided tape. J have had the experience or the contactor is alone and falls s alarm is set to scream .. today I use the most. Bad product for me
