Semi Automatic Barrier Gate – Magnetic Lock Boom Gate with 1200 lb Hold
The MB832-SA Semi Automatic Barrier Gate is the only true hybrid boom gate that gives you powerful magnetic locking in both the up and down positions — without any motors, electricity, or expensive automation. Powered by a patent-pending 1200 lb magnetic lock and a torsion-spring counterweight system, this magnetic lock boom gate lets you raise or lower the arm in seconds by hand. Install it in under two hours anywhere — even on solar power — and enjoy the perfect middle ground between a basic manual gate and a full-automatic electric gate.
How the Semi Automatic Barrier Gate Works
The heart of the MB832-SA is its patent-pending magnetic lock. When the arm reaches the fully raised or fully lowered position, the powerful magnets engage automatically with 1200 lbs of holding force — no pins, no latches, no effort. To move the arm, simply pull the release handle (or use the optional remote cable) and the lock disengages instantly. The built-in torsion spring and counterweights make operation effortless, even with arms up to 32 ft. The entire system is mechanical and maintenance-free, making it ideal for parking lots, construction sites, private roads, and anywhere you want reliable access control without the cost or complexity of electric motors.
Semi-Automatic Magnetic Release Barrier Gate Operation.
mb832 semi automatic barrier gate. The mag-lock holds barrier arm in the up position with 1200 lbs holding force.
Magnetic lock releases – barrier arm lowers. After power is cut to the mag-lock a torsion spring starts the arm moving to the down position.
Barrier arm in the closed Down Position in the down position additional mag-lock can be added to hold the arm down for added security.
Barrier in the magnetic locked down position. The mag-lock holds barrier arm in the down position with 1200 lbs holding force. When power to the mag-lock is cut the barrier arm will go up.
Magnetic lock releases – barrier arm goes up. After power is cut to the mag-lock counterweights start the arm moving to up position. Counterweights can be field adjusted to control speed
Barrier arm in the open up position. In the up position an additional mag-lock can be added to hold the arm up for added security
Why buy a Semi-automatic barrier gate versus an electric barrier gate?
This new type of barrier gate can be installed in a couple of hours anywhere and can be powered by a small solar panel with many remote control options saving substantial installation costs.
Typical Uses:
Emergency opening of roads, parking lots, industrial plants or any other facility that needs emergency one-way operation to egress traffic. Emergency closure of public roads during flooding, industrial plant fires, traffic control for guard shack use to stop vehicles.
Section: Why Choose This Magnetic Lock Boom Gate?
- Installs in hours — no trenching, no wiring, no permits
- Solar compatible or runs on any 12V system
- 1200 lb magnetic hold in both up and down positions
- Quick manual operation with optional remote release
- Fail-safe design — arm stays locked even during power outages
- Costs far less than full-automatic gates while offering more security than manual ones
Key Features:
- Patent-pending 1200 lb magnetic lock system
- Torsion spring counterweight for effortless operation
- Arms from 8 ft to 32 ft (pre-balanced)
- Heavy structural steel frame with powder-coat finish
- Stainless and galvanized hardware throughout
- Optional tip support stand for longer arms
- Can be padlocked for extra security
- DOT-grade reflective striping included
Specifications:
- Arm lengths: 8 ft – 32 ft
- Holding force: 1200 lbs (magnetic lock)
- Operation: Manual with magnetic auto-lock
- Base plate: 16″ × 10.5″ with four 5/8″ holes
- Pivot height: 35″ above pavement
- Finish: Durable orange powder coating
Dimensions:
Base plate: 16″ X 10.5″; height of arm above pavement 35″; overall height 37″; width of frame 10″ X 10″; base- 4 holes 5/8″ dia.; length of counterweight arm from pivot 32.5″ Maximum.