Sentinel MB24 Articulated Arm Swing Gate Operator | Gates to 2.5M

Fast-opening – Compact – Tough – Self-locking – Intensive use 24 Vdc gate opener for gates up to 2.5 metres


Featuring a fast 10-second opening speed, the Sentinel MB24 articulated arm swing gate opener is suitable for domestic or commercial applications.


Its compact size, at only 184mm wide, makes the MB24 the ideal solution for gates with limited side spaces or gates with larger brick pillars that would struggle to fit the linear-style gate opener.

Choice of two styles of arm, fixed or sliding, to accommodate a variety of situations.

Manufactured by a European company that has been designing and building high-quality, industrial, heavy-duty gate automation solutions for more than 40 years.

The Sentinel MB24 Articulated Arm Swing Gate Opener features include:

  • Quick easy installation
  • Fast opening speed: 10 secs
  • Integrated control unit: the MB24’s built-in control panel incorporates numerous operating functions
  • 2 Limit switches: equipped with open and close limit switches — can also be used for outward opening gates
  • Tough and durable: equipped with a strong, articulated, anti-shearing arm and manufactured with tempered steel the mechanical quality of the Sentinel MB24 is excellent
  • Battery backup: optional battery backup ensures operation can be guaranteed even in the event of a power supply failure
  • Optional solar power: the ability to work on solar power makes the MB24 suitable for situations where mains power may not readily available or can be employed in temporary applications such as building sites, quarries or sports events
  • Safety sensing: the obstacle detection system prevents damage to the gate and vehicles
  • Self-locking: no lock required.


For more information, download our product datasheet

The Sentinel MB24 Swing Gate Operator is supplied with an in-built control panel as standard.

However, the Brainy 24+ can be added as an external control panel to accommodate additional equipment such as loop detectors etc.


  • Suitable for use with 1 or 2 operators
  • Built-in battery charger
  • Integrated LCD display
  • Integrated 433.92 MHz 64-code receiver
  • Automatic, semi-automatic and deadman’s control
  • Separate limit switch inputs for each motor
  • Open, close, step-by-step, pedestrian and stop inputs
  • Output for electric lock 12 Vdc
  • Output for configuration as a second radio channel or service light
  • Gate open indicator
  • Separate electronic torque adjustment for each motor
  • Anti-crushing safety through encoder management
  • Separately adjustable slowdowns for each motor
  • Advantouch system to configure parameters and manage radio transmitters
  • Programming access password protected
  • Maintenance warning
  • Power supply: Control unit 24 Vdc – 50/60 Hz power supply; Motor 24 Vdc


Specifications Sentinel MB24 Swing Gate Opener
Power Supply 24 Vac
Motor Supply 24 Vdc
Max absorbed current 6.2 A
Torque 180 Nm
Opening time 10 seconds
Duty cycle intensive use
Protection level IP44
Built-in control unit Yes
Operating temperature -20°C /+50°C
Leaf max dimension 2.5 m
Weight 8.2 kg


For more information download our product datasheet

Download our information about installation and operating instructions