
Outdoor Pedestal IP Intercom Installation Guide Page 6
Door Status Monitor & Request to Exit
The connector for Request to Exit (REX) and door status monitor is a 4-pin
male connector used to monitor door open/closed status as well as the
RTE button/motion sensor functionality.
Pin 1: Door status monitor line. It can be wired as a ground/open
button or switch. It is pulled up by 4.7k to 3.3V and wired through
220Ω. Connect to the NO of an SPDT.NOTE 1
Pin 2: Door status ground reference pin. Connect to Common.
Pin 3: Request to exit button and/or motion activated exit monitor
line. Can be wired as a ground/open button or switch. Connect to
the NO of an SPDT connection.NOTE 2
Pin 4: REX ground pin. Connect to Common.
NOTE 1: Door status monitor has a detection de-bounce period of 300 milliseconds
minimum. Otherwise, detection is not guaranteed.
NOTE 2: The REX has a detection de-bounce period of 130 milliseconds minimum.
Otherwise, detection is not guaranteed.