User's Manual

External Monitor (Optional)
28
Normally Closed ( )
A normally closed contact remains closed when inactive. Once activated, the
contact is opened, and your message is transmitted.
Wiring Recommendations
Use only 20-gauge cable to wire the monitor to the MOC.
The length of the cable between the MOC and the monitor should not exceed
300 ft.
Wiring Instructions
1. Remove the back cover (see Steps 1 and 2 of “Installing the Batteries”).
Once activated
Inactive:
Normally closed external contact
Contact
Contact