PRICE
$531.93
Part Number: LM-50800

Description

LiftMaster 50800 RBMA Electric Treadle NEMA 4/12

The LiftMaster 50800 RBMA electric treadle is used for vehicle activation in commercial door and access control applications. When a vehicle passes over the treadle, the weight compresses the internal switch and sends a signal to the operator control circuit.

This is an electric treadle, not a pneumatic hose kit. It is suited for applications where a physical vehicle-actuated switch is preferred and where the operator input supports the intended open or safety function.

Compatibility and Application Notes

  • Commonly used with compatible LiftMaster commercial operators and control circuits that accept a 2-wire switch input.
  • May be used for OPEN control on compatible operator setups when wired according to the operator instructions.
  • May be used for SAFETY input only where the operator control type and documentation allow that function.
  • Associated control wiring types for safety use may include B2, C2, L2, T, T1, or TS depending on the operator.
  • Not a loop detector, motion detector, photo eye, or monitored entrapment protection device.

Features & Specifications

Feature / SpecificationDetails
ManufacturerLiftMaster
Product TypeRBMA electric treadle
Part Number50800
ApplicationVehicle-actuated commercial door or access control input
EnclosureNEMA 4/12 outdoor enclosure
Connection2-wire connection to compatible operator input
Power RequirementNo power required at the treadle switch
Activation MethodVehicle weight compresses electric switch
ModelRBMA
NotesUse only with approved control wiring and required safety devices

Also Known As / Related Part Numbers

  • 50800
  • 50-800
  • RBMA electric treadle
  • LiftMaster electric treadle
  • NEMA 4/12 treadle

Technician Note

Electric treadles and pneumatic treadles are serviced differently. Confirm the original system type before ordering parts, especially on older commercial door installations.

Before Ordering

  • Confirm the job calls for an electric treadle, not a pneumatic hose treadle.
  • Confirm the operator has a suitable 2-wire input for the intended function.
  • Confirm the treadle location works for vehicle traffic and does not create a pedestrian hazard.
  • Confirm the enclosure rating and mounting arrangement fit the environment.
  • Confirm monitored safety photo eyes or edges are installed where required.

Professional Advisory

Vehicle treadle wiring can affect automatic door movement. A qualified technician should verify control wiring, safety inputs, and door operation before the system is placed back into service.

Product Questions & Answers

How does the 50800 electric treadle work?

A vehicle compresses the treadle switch, and that switch sends a signal to the connected operator input.

Does the 50800 require power?

The treadle switch does not require power at the treadle. It uses a 2-wire switch connection to a compatible operator input.

Is this the same as the 658206 pneumatic treadle kit?

No. The 50800 is an electric treadle. The 658206 uses a pneumatic hose, air switch, and outdoor enclosure.

Can this treadle be used outside?

It is listed with a NEMA 4/12 outdoor enclosure, but the installation still needs proper mounting, wiring protection, and drainage for the site.

Can it replace photo eyes?

No. This is a vehicle activation or control device. It does not replace monitored photo eyes, sensing edges, or required entrapment protection.