Figure B.4  Proprietary Protective Signaling System
Form-C relay contact programmed to 
activate on Supervisory condition.
Form-C Trouble contact which will 
automatically activate on any Trouble 
condition.
Form-C Alarm contact programmed to 
activate on General Alarm.
FACP Main Board
Fire Alarm Control Panel
Notes:
1. Connection between the MS-5UD/MS-10UD 
and the transmitter are supervised by the 
transmitter.
2. This MS-5UD/MS-10UD Transmitter 
arrangement can be employed for NFPA 72 
Proprietary Protective Signaling System.
3. Potter Electric Model EFT-C has not been 
tested for UL 864 9th Edition and is for use in 
retrofit applications only.