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Primary Operator

Secondary Operator

Control Box

Junction Box

Edge Sensors

Photoelectric Sensors

A

B

Post 
Bracket

TOP VIEW OF GATE

9-1/8" (23.2 cm)

13-3/4" (34.9 cm)

5-7/8" (14.9 cm)

3-7/8" (9.8 cm)

4-3/8" (11.1 cm)

6-3/8" (16.2 cm)

12-1/16" (30.6 cm)

4-7/8" (12.4 cm)

STANDARD CONTROL BOX

Post Mount with U Bolts

STANDARD CONTROL BOX

Wall Mount with Anchors

2-7/8" (7.3 cm)

Weight:

 13,2 lbs. (6 kg.)

92,2 cm (36-5/16 po)

1/2" DIA.

 

(1.3 cm DIA.)

 

11,4 cm (4-1/2 po)

 

0,64 cm 
(1/4 po)

 

94,9 cm 
(37-3/8 po)

 

136 cm (53-1/2 po)

 

10,2 cm 
(4 po)

14-3/8"

(36.5 cm)

6-9/16"
(16.7 cm)

20-3/4" (52.7 cm)

17-3/16"

(43.7 cm) 6-3/16"

(15.7 cm)

Standard Control Box

Large Metal Control Box

16-7/16" (41.8 cm)

ENTRAPMENT PROTECTION

GATE CONSTRUCTION & SITE PREPARATION

INSTALLATION OVERVIEW

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!

STANDARD DUAL GATE INSTALLATION

Maximum gate weight/length: 

850 lbs. (385.6 kg) / 10 ft (3.0 m)
750 lbs. (340.2 kg) / 12 ft (3.7 m)
650 lbs. (294.8 kg) / 14 ft (4.3 m)
550 lbs. (249.5 kg) / 16 ft (4.9 m)

Earth Ground Rod
Check national and local 
codes for proper depth

High and Low Voltage UL approved conduit. Power and 
control wiring MUST be run in separate conduits

Warning Placard on both sides of gate.

Gate MUST be level. Gate and gate post MUST be plumb.

DO NOT weld the crossbar on just a few pickets, or 
they could bend.

There should only be a 
maximum of 4" (10.2 cm) 
from the center of the hinge 
to the edge of the post or 
column. If the distance is 
greater than 4" (10.2 cm) 
entrapment protection for this 
area is required.

Gate MUST have a 
smooth bottom edge, no 
protrusions should exist.

Remove ANY/ALL wheels 
from the bottom of gate. 

Gate MUST NOT 
hit or drag across 
ground.

Gate MUST swing freely and be 
supported entirely by its hinges.

DO NOT install next to sprinklers or any area that 
may expose the bottom of operator to water.

DO NOT install on uphill or downhill gates.

DO NOT install on ANY pedestrian passageways, 
doorways, or gates.

Wire 

Gauge

DIRECT PLUG-IN 

TRANSFORMER (120 VAC)

14

350 feet (107 m)

12

525 feet (160 m)

10

850 feet (259 m)

OPERATOR DIMENSIONS

DIMENSION CHART

A

B

7" (17.8 cm)

7" (17.8 cm)

8" (20.3 cm)

6" (15.2 cm)

7-1/2" (19.1 cm)

7-1/2" (19.1 cm)

6-1/2" (16.5 cm)

6-1/2" (16.5 cm)

6" (15.2 cm)

6" (15.2 cm)

Wired connection in a dual gate setup is optional. Operators 
can be setup for wireless dual gate communication if a second 
control box is purchased.

This operator contains an inherent (internal) entrapment protection system and REQUIRES 
the addition of a LiftMaster external monitored entrapment protection system (non-contact 
photoelectric sensor or contact edge sensor) for EACH entrapment zone prior to gate movement. 
An entrapment zone is every location or point of contact where a person can become entrapped 
between a moving gate and a stationary object. Your application may contain one or many 
entrapment zones. System includes three monitored entrapment protection inputs capable of 
covering all entrapment zones (and a total of six inputs with the optional expansion board). Use 
only LiftMaster approved entrapment protection devices.

Outside

Pr

oper

ty

Inside

Pr

oper

ty

Outside

Pr

oper

ty

Inside

Pr

oper

ty

NON-CONTACT SENSORS

CONTACT SENSORS (EDGE SENSORS)

Model LMWEKITU

LiftMaster Monitored Wireless Edge Kit 
(Transmitter and Receiver) 

Model LMWETXU

LiftMaster Monitored Wireless Edge 
Transmitter 

Model L50

Large Profi le Monitored Edge

 

(82 ft. roll)

Model L50E

Large Profi le Ends Kit (pair, pack of 10)

Model L50CHP

Channel for both Large and Small Profi les - 
PVC (8 ft., pack of 10)

Model L50CHAL

Channel for both Large and Small Profi les - 
Aluminum (10 ft., pack of 8)

Model LMTBU

LiftMaster Monitored Through Beam Photoelectric 
Sensor

Model LMRRU

LiftMaster Monitored Retro-Refl ective Photoelectric 
Sensor

NOTE: 

LMRRU is provided with the operator

Model CPS-UN4

LiftMaster Commercial Protector System

®

For a gate operator utilizing a contact sensor, if the bottom 
edge of a swing gate is greater than 6 inches (15.2 cm) above 
the ground at any point in its arc of travel, one or more contact 
sensors shall be located on the bottom edge.

If utilizing a contact sensor as entrapment protection, one 
or more contact sensors shall be located on the inside and 
outside leading edge of a swing gate.

LMRRU

Model S50

Small Profi le Monitored Edge (82 ft. roll)

Model S50E

Small Profi le Ends Kit (pair, pack of 10)

Models L504AL, L505AL, and L506AL  

Large Profi le Edge - Aluminum Channel 
(4 ft, 5 ft, 6 ft)

Models S504AL, S505AL, and S506AL

Small Profi le Edge - Aluminum Channel 
(4 ft, 5 ft, 6 ft)

Model ETOOL

Edge Cutting Tool

Outside

Pr

oper

ty

Inside

Pr

oper

ty

Wire 

Gauge

EXTERNAL PLUG-IN 

TRANSFORMER (24 VAC)

18

150 feet (46 m)

16

250 feet (76 m)

14

400 feet (122 m)

12

600 feet (183 m)

10

1,000 feet (305 m)

OPERATOR POWER SOURCE

If the distance between the open gate and the wall is less than 16" 
(40.6 cm) entrapment protection for this area is required. Entrapment 
protection is required for the area between the gate and the curb.

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