SW420 Swing Gate Operator (light duty)
Reliable gear-driven swing gate operator
This compact design supports gate lengths up to 12 feet and gate weights up to 300 pounds. Powder coated weather-resistant steel enclosure and a high-starting torque motor with built-in overload protection ensure strong, dependable performance. This model is ideal for residential installations and is UL325-compliant.
2-Year Warranty
Includes a Liftmaster 412HM Receiver
Gate logic board provides many enhanced and exclusive features
- Digital Logic Control Allowing for Long Control Lines of Over 1,000 Feet
- Separate Open and Close External Sensor Inputs
- Fully Adjustable Inherent Obstruction Detection System
- 17 LEDs to Ease Installation and Speed Diagnostics
- “Sequenced Access Management” (SAM) System
- Advanced Dual Gate Operation
- Industrial Surge and Spike Protection
- Shadow Loop Input
Specifications
Operator speed - 90 degree swing in 12 seconds
Power - 115/230 VAC, Single phase - 60 Hz
Operator weight - 110 pounds
Accessory power - One 24 VAC
UL listed - UL991, UL325 Class I, II, III, IV

Construction:
Gear reduction: 30:1 wormgear in oil
Motor: 1/3 high-starting torque motor
Metal frame: Pre-galvanized steel
Enclosure: Weather resistant 14-gauge pre-galvanized steel

Optional equipment:
- Pad Mount Kit
- Pedestal Mount Kit

Recommended Capacities
HP Max gate weight Max gate width Cycles per hour
1/3 300 lbs. 12 ft. 10

Standard Features
inherent obstruction sensing
This unit’s internal obstruction sensing system offers a single force adjustment for both the open and closed directions. If the gate strikes an obstruction, a closing gate will reverse to open and an opening gate will reverse to close.
external obstruction sensing
Input connections are provided for external contact and non-contact sensors, such as photo eyes and edge devices.
advanced dual gate operation
This convenient 2-wire system allows the operation of 2 separate gate operators in unison at a single entrance. This advanced system provides the added convenience of connecting accessories to either operator.
sequenced access management
The sequenced access management (SAM) system provides the capability to sequentially control the operator in tandem with a barrier gate.
digital logic control
Supports long-distance control wiring runs of over 1,000 feet, providing you greater flexibility of gate operator site placement.
LED indicators
Operator input, status and diagnostic LEDs simplify setup and troubleshooting.
warning device
UL325-compliant entrapment warning alarm has the ability to be set for pre-operation warning. This will provide a 3-second warning prior to and during gate movement.
loop detector inputs
A full range of inputs are available to support exit, shadow and interrupt loop detectors.
timer to close
Adjustable timer can be set from 1 to 180 seconds. The unit will automatically reset upon receiving any additional open commands. maximum run timer
Protects against damage to the gate and operator by limiting the unit's run time to 120 seconds.
emergency stop button
This 1-button station will halt movement of the operator in an emergency situation and comes standard in an outdoor weathertight enclosure.
maglock control
A dedicated control relay is provided to activate and deactivate an optional magnetic lock for securing the gate.
gear drive reduction
The wormgear 30-to-1 reduction unit is saturated in an oil bath for strong fluid motion of the operator.
control inputs
Control inputs allow the connection of a full range of optional external devices like loop detectors, telephone entry systems, access control systems and radio receivers.
radio control
Includes a 412HM radio receiver installed inside the cabinet. (Transmitters not included.)
limit settings
All driven limit cams are fully adjustable, adding considerable convenience to unit installation and maintenance.
surge & spike protection
Specially designed circuitry provides excellent protection from external spikes or surges.
quick-release disconnect
This quick-release arm ensures that manual operation is possible during emergencies and maintenance work.
fold-down access door
A fold-down door is incorporated into the design to provide easy access to the operator's electronics.