The TT455-RT-238's digital input will interface to any standard PIR motion detector with a normally closed relay, which opens shortly when motion is detected.

The digital input must be programmed to act as PIR.

Command 911 sends PIR status to the computer, when input status is changing.

Furthermore you can program the TableTop to for example turn on light, when motion is dected or turn off light when no motion is detected for some time, on the below listed triggers:
- PIR Active
- PIR idle for 1 minute
- PIR idle for 2 minutes
- PIR idle for 3 minutes
- PIR idle for 4 minutes
- PIR idle for 5 minutes
- PIR idle for 10 minutes
- PIR idle for 20 minutes
- PIR idle for 30 minutes
- PIR idle for 45 minutes
- PIR idle for 60 minutes