RTB
Remote Trouble Buzzer
Product Installation Drawing
Document 50953 Rev B 5/18/00 ECN 00-154
Make certain to remove all power (AC and batteries) before connecting/disconnecting the RTB Remote
Trouble Buzzer to the host fire alarm control panel.
RTB - Remote Trouble Buzzer
Terminal Connections
The RTB is a Remote Trouble Buzzer which provides a green AC Power LED and a yellow Trouble LED along with a piezo
sounder, all of which mimic the condition of the host control panel. The RTB can be mounted remotely in a single-gang
electrical box. Four RTB terminals are provided for connection to a host fire alarm control panel as illustrated below.
RTB Cover Plate
RTB Cover Plate
DC Ground (GND)
AC Power LED (AC)
Trouble LED (TBL)
Piezo Sounder (BUZ)
Note: All four connections in the above
illustration are made to a terminal block
on the host control panel main circuit
board. The panel terminals are labeled
similar to the labels shown above in
parentheses.
Single-gang Electrical Box
Power Requirements
The RTB is intended to mimic the corresponding indicators on the host fire alarm control panel. RTB connections must
only be made to host control panel outputs which provide this feature. The following table lists the voltage and current
requirements for each terminal on the RTB. Refer to the host panel's manual to ensure that it supports the RTB as well as
for power specifications and wiring information and include the RTB voltage and current requirements in the host panel's
battery calculations.
RTB Te r mina l Conne ct ion
Volt a ge
Cur r e nt R a nge
Buzze r
24 VDC
3 - 16 mA
Tr ouble LED
24 VDC
3 - 20 mA
AC Powe r LED
24 VDC
3 - 20 mA
DC Gr ound
0 VDC
0 VDC