GAI-Tronics 226-001 Industrial Telephones with Keypads - Manual (Page 14)

Pub. 42004-337F
Model 226-001, 246-001, 256-001, and 276-001 Industrial Telephones with Keypads Page 14 of 18
f:\standard ioms - current release\42004 instr. manuals\42004-337f.doc
06/12
Auxiliary Output
Each telephone includes one isolated solid state volt-free closure capable of switching a maximum of 48
V dc, 125 mA; or 28 V
RMS
ac, 80 mA
RMS
. TB2 (AUX OUT) on the Main PCBA provides the connections
for the auxiliary output. Refer to Figure 13 for location of TB2.
The auxiliary output allows peripheral equipment, such as beacons, video cameras, and alarm generators,
to be activated when the handset is off hook. The relay remains energized for the duration of the call.
Figure 13. Location of TB2 on Main PCBA