P
AGE
9 of 16
S.M.A.R.T. E
MERGENCY
P
HONES
42004-661L2C
f:\standard ioms - current release\42004 instr. manuals\42004-661l2c.doc
11/02
Relay Output
The relay output enables peripheral equipment, such as beacons, video cameras, and alarms, to be
activated when the
EMERGENCY
push button is pressed. Two sets of Form C-type relay contacts are
accessible on TB3 inside the phone enclosure. Refer to Figure 3 and Figure 5 for location of TB3 for
your model.
The relay contacts are activated when the
EMERGENCY
push button is pressed. The relay remains
energized for the duration of the emergency call.
External Power
An external power supply (sold separately) must be connected to the phone to use the relay output. The
power supply must provide 200 mA of current 10 V dc to 30 V dc, and must be isolated from earth
ground. Power supply connections can be made at either of two locations on the telephone circuit board:
1.
A modular power jack is provided for use with a plug-in type power supply (GAI-Tronics Model
C01009 or equal). Refer to Figure 3 and Figure 5 for external power locations.
2.
Terminal positions TB1-3 and TB1-4 are located next to the phone line terminals, and may be used if
power is supplied from a hard-wired power supply. See Figure 6 below, and refer to Figure 3 and
Figure 5 for the location of TB1 for your model.
Figure 6. Terminal Block TB1 – Phone and External Power Connections
