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22 - PC3500TX Terminal Installation & User’s Guide
A PPENDIX B
Optional Signal Device
With a bell relay, you can program when bells or other devices will ring using the Bell
Wizard in your Terminal Manager software. Call Lathem to purchase a bell relay. You
should have a qualified/certified electrician connect your signaling devices to ensure
proper connections and prevent damage to your equipment. Note: The PC3500TX relay
is only a switching device and does not supply power to the ringer.
To connect your signaling device(s)
If not already installed, mount the relay module to the inside of the mounting bracket.
See the diagram below for details on connecting your signal devices. Connect the relay
module to the RJ-11 DI/DO connector on the back of the terminal and place the terminal
on the mounting bracket.
*NOTE* You must use an external power source, such as Lathem’s RB8 relay booster,
for your bell ringer. When connecting to the RB8 relay booster, connect the Common
from the PC3500TX bell relay to the RB8’s Ctrl In A connection point and the Normally
Open to the RB8’s Ctrl In B connection point.
GENERAL SPECIFICATIONS
Physical-
Dimensions: .70” H X 3.00” W X 2.50” D
Weight: .15 LBS
Environmental-
Operating Temp: 32-110
ο
F (0-45 degrees C)
Relative Humidity: 20-90% Non-Condensing
Operating Parameters-
Power Consumption: 80 mA (energized)
Contacts-
Type: Single form “C”
Rating: 1 Amp @ 120 VAC
2 Amp @ 24 VDC
TO
TERMINAL
3.00in
1 2 3 4 5
N
ot Used
N
ormally Open
Common
TB1
K1
.70in
N
ot Used
N
ot Used