SPECIFICATIONS:
Power Source: 24V DC, powered by the PS-2420UL Power Supply
Mounting: Semi-flush or surface mount (mounting box sold separately)
Terminations: Color-coded pre-wired pigtails
Relay Input: 24V DC, Red, Black wires, 22AWG
Relay Output: Blue (COM), Orange (N/O), Yellow (N/C) wires
N/O Output rating: 5A at 30V DC
10A at 125V AC
3A at 250V AC
N/C Ouptut rating: 3A at 30V DC or 125V AC
Switch Output: Green (COM), White (N/C); Switch rated to 30V AC/DC, 1 amp
Wiring: 2 conductors from 24V DC power supply to GT-OP panel
2 conductors from GT-OP panel to strike, with power for strike wired in series
Dimensions (HxWxD): GT-OP2: 8-7/8" x 5-5/16" x 2"
GT-OP3: 12-5/8" x 5-5/16" x 2"
WIRING DIAGRAM: GT-OP2 Rear View
Testing the unit without the postal lock:
Tape or hold switch closed and apply power to the unit on Red / Black
leads. Release switch and timer circuit will activate. Confirm relay
activation with a multi-meter at the Blue / Yellow / Orange leads.
TO 24V DC (+)
RELAY COMMON CONTACT
RELAY NORMALLY CLOSED CONTACT
TO 24V DC (-)
RELAY NORMALLY OPEN CONTACT
SWITCH (NORMALLY CLOSED)
SWITCH (COMMON)
Timer control for door
release (5 to 20 seconds)
Switch, activated by
postal lock device
(When lock is engaged, the switch
releases and starts timer)
Lock device from Post
Office installed here
Opening for postal
lock keyhole
Lock device
mounting studs
PC Board can be adjusted up
or down as needed to ensure
proper contact from the postal
lock to the switch
RED
BLUE
YELLOW
BLACK
ORANGE
WHITE*
GREEN*
* The green and white wires bypass
the timer circuit and go directly to the
switch. Use this connection when
going to a 3rd party timer or when the
timer circuit is not needed. The
orange, black, yellow, blue, and red
wires would not be used if you
connect to the green / white bypass.
IMPORTANT: If the Green and White wires are not used, cut wires to avoid a possible malfunction.
