Aiphone gt-op2 Leaflet

1 | GT-OP2 / GT-OP3 Installation Instructions

The GT-OP2 and GT-OP3 Postal Lock Panels are for use with a GT Series Multi-Tenant Entry Security intercom system 
and allow a postal lock device to be mounted alongside the entry panel. The lock device is available from the post office 
and mounts behind the panel, accessible via the keyhole opening. The timer relay can be adjusted to provide a contact 
closure from 5 to 20 seconds. NOTE: The GT-OP3 has an available position for an additional module. This opening can 
be filled by any type of module, but must be purchased separately. 

Opening for 
Postal Lock

Blank Panel 

(door release 

circuitry inside)

Open 

module 

position

BLU
YEL

ORG

RED

BLK

+

-

AC 

Power

Electric 

Strike

NOTE: If using a magnetic lock, 
connect to BLU & YEL wires.
See color code definitions on Pg. 2.

0512

1.

Install alongside a GT Entrance Panel. 

2.

When using GT-OP3, install an additional module in the open position at the top of the unit. 

3.

Secure wire connections as shown on wiring diagram.

4.

Cut the unused contact wire so the bare wires are not exposed.

When mounting with a rain hood (GT-nH) or surface box with hood (GT-nHB), you must grind out the 
bottom lip of hood / box for the lock to fit. Please contact Technical Support if further clarification is needed.

6.

Refer to standard GT Series Installation Manual for complete system information.