Swing L 300 Linear Actuator Arm Double Swing Gate Opener MGLDK/ MGLDK-LV




Merlin's Swing L 300 Swing Gate Opener is suitable for residential double swing gates up to 6 metres. 

IP44 rated, the Merlin Swing L 300 provides heavy lifting power performance for a swing gate up to:

  • 200kg for 3m gate
  • 250kg for 2.5m gate
  • 300kg for 2m gate

Mains or Low Voltage options available. myQ capable and Battery Backup compatible.

Powerful, quiet and compliant to Australian and New Zealand Standards, enjoy complete peace of mind with 3 Year Warranty and built in premium safety reversal technology, to ensure your family and possessions are protected.

Loaded with Merlin Security+2.0 encryption rolling code technology means perfect operation under all environment conditions and from a greater distance than ever before.


The myQ App will run on Apple iOS devices (e.g. iPhone) using iOS 14.0* or higher, Apple Watch requires watchOS 7 or higher. Android devices requires Android 7.0 Nougat* or higher. Windows and Blackberry devices are not compatible.

*  As updated versions of the myQ App becomes available, older iOS' may no longer be compatible

  • Product Features
  • Merlin Safety Features
  • Specifications
  • Included Accessories
  • Downloads
myQ CompatibleMYQ CAPABLE TECHNOLOGY lets users create schedules, monitor, receive alerts and control the gate opener away from home.1
LCD DisplayLCD DISPLAY for fast and intuitive programming setup.
Soft Start and StopSOFT-START AND SOFT-STOP for smooth operation.
Speed AdjustmentSPEED ADJUSTMENT allows you to increase and decrease opening and closing gate speeds.
Pedestrian ModePEDESTRIAN MODE allows for customised gate opening access.
240V240V MAINS VOLTAGE (Low Voltage option available)
3 Year Warranty3-YEAR WARRANTY
IP44IP44 WEATHER RESISTANT ingress protection IP44 suitable for outdoor installation.
Quit DC MotorQUIET DC MOTOR eliminates noise and vibrations, provides smooth operation.
Battery Backup CompatibleBATTERY BACKUP COMPATIBLE ensures access even when the power is out.2
Single Swing Gate up to 6 mtrsDOUBLE SWING GATE UP TO 6 METRES
Security +2.0SECURITY+ 2.0® sends a new code with every remote click.
Safety ReversePREMIUM AUTOMATIC SAFETY REVERSE function will allow your gate to stop and reverse automatically if obstructed in opening or closing.
Time-to-closeTIMER-TO-CLOSE automatically closes the door after a pre-set amount of time.3
Long Range TransmitterIMPROVED TRANSMITTER RANGE has up to 18% better range meaning you can start opening your gate sooner.4
Automatic force sensingAUTOMATIC FORCE SENSING monitors and adjusts the force needed to open your gate with each operation.
Disengagement MechanismDISENGAGEMENT MECHANISM allows you to manually open the gate whenever needed.


Additional purchase of Merlin myQ Gateway and Safety IR Beam accessories required to enable myQ functionality.

Additional purchase of Merlin Battery Backup accessory required to enable Battery Backup functionality

Safety IR Beams must be installed to enable the use of Timer-to-Close. See User Guide for additional information. Smartphone not included.

When compared to other available Merlin products.

Premium Automatic Safety Reverse

  • Function will allow your gate to stop and reverse automatically if obstructed while opening or closing. 

Automatic Force Sensing

  • Monitors and adjusts the force needed to open your gate with each operation.

Disengagement Mechanism

  • Allows you to manually open the gate whenever needed. 


Maximum Gate Width & Weights

  • Maximum weight for single gate:
    • 200kg for 3m gate
    • 250kg for 2.5m gate
    • 300kg for 2m gate
  • Maximum width for single gate: 6m

Standard Specifications

  • Main AC Supply: 220-240Vac; 50/60Hz or 24V Low Voltage
  • Motor Voltage: 24 VDC
  • Input Power: 50 W
  • Ambient Temperature Range: -20 - +55*C
  • Max peak pulling force: 1500 Nm
  • Radio Frequency: 433.30, 433.92, 434.54 MHz with Security+ 2.0 technology
  • Compatible with myQ technology 
  • Gate opener capacity of up to 64 memory registers 
  • IP44 Weather Resistant 

Door Specs

Door Opening and Closing Times

Door Height

  • User-added image 2x Four Button Remote Control (Security+ 2.0 + Security+) (E970M)
  • Logic BoxLogic Box
  • Transformer BoxTransformer box only for Low Voltage Kit