Larco Guardian II - Manual (Page 3)

Access Controller
Installation Guide
Page 3 of 15
Guardian II controllers
G50 (607-0071-000A) - Open Construction:
The open construction Guardian II board mounts directly on top of a Guardian II receptacle. The
receptacle typically mounts in a customer’s enclosure or faceplate. A 1" square hole must be cut in the
panel to insert the receptacle. After the receptacle has been installed, the Guardian II PCB with its
female header is lowered onto the male pins of the receptacle PCB and secured with a nylon tie strap.
A tri-color LED (mounts in a 5/16” diameter hole) and wiring harness are included. This model can be
easily integrated into existing faceplates and enclosures.
G150 (607-0072-000A) - Doorframe Mounting Plate (Stainless Steel):
The controller and tri-color LED are mounted on a 5-1/4" x 1-3/4" stainless steel faceplate that can be
installed on a standard 2” exterior doorframe. A 4-1/4" x 1-1/2" rectangular hole and two #8-32
tapped holes must be drilled to fasten the plate to the frame using the security screws provided.
See Figure 3 for template
G250 (607-0073-000A) - One Gang Remodel Box Assembly
This model is used in interior applications such as lobbies, computer rooms, storage areas, etc. This
single gang remodel box mounts thru a cutout in drywall. The box has two mounting ears that allow it
to be self-securing within the wall. Wall thicknesses of ¼” to 1-1/4” can be accommodated. The
controller and tri-color LED are mounted to a stainless steel faceplate designed to fit the single gang
box.
See Figure 4a for template
G250 (607-0073-002A) - One Gang Outlet Box Assembly
This model can be surface mounted in interior or exterior applications. The enclosure combines
weatherproof cast aluminum, 3 hole (½”) box with an extension ring assembly. The controller and tri-
color LED are mounted to the same stainless steel faceplate as the other G250 model. Approximate
dimensions are: 4-3/4”h x 3”w x 3-1/4”d.
See Figure 4b for dimension drawing
G450 - Ruggedized Aluminum Enclosure:
Used where harsh outdoor conditions exist. The controller and tri-color LED are mounted in a 4-7/8" x
3-1/8" x 2-1/4" aluminum enclosure which can be mounted directly on a surface (wall) or to the back
(secured side) of the optional, 11 gauge mounting plate with (2) security screws. The plates come in
stainless steel or aluminum and are typically welded in place.
The optional installation kit, 702-0071-000A contains (2) tamper-resistant ¼-20 x 2-1/2” screws and (1)
1/4" drive spanner bit. Both the plates and installation kit can be purchased separately.
See Figure 5 for template