Medium-Duty Jackshaft Operator | Commercial Garage Doors

MJ Medium-Duty Jackshaft Operator

Medium-Duty Jackshaft Operator

Commercial MJ Medium-Duty Operators in Lansing, MI

115 volt 1 Ɵ.
Apply Open/Close/Stop functions with the standard three-push-button control station. Controls with one, two and three buttons are available.
Receive notifications when routine maintenance is required on your Commercial Door Operator.
Improve durability with the NEMA 1 type electrical box construction with a powdercoat finish.
Mount on the left or right side of the door. No rails to hang, the operator simply mounts on the wall and attaches to the door shaft through chain and sprocket. (3900 can mount directly to shaft)
Enable limit setting for ease of installation and adjustment to ensure accuracy even after a power failure.
Automatically close the door with Timer-To-Close (programmable in 1-second or 15-second increments).
Ensure peace of mind with a LiftMaster® two-year warranty.

Compliant with all UL 325 requirements.
Accept up to 20 remote controls and unlimited DIP switch remote control with our Security+® radio technology.
Protect against door and operator damage due to obstacles with the Adjustable Friction Clutch.
Signal the door to reverse or stop if closing time exceeds maximum door travel prevent damage to door and operator.
Provide easy, emergency manual operation using a readily accessible disconnect.
CPS-U Monitored Commercial Protector System.

Security+^®: Built-in 3-Channel Security+ Receiver allows you to learn/program up to 20 LiftMaster 315 MHz remote controls.
Safety Standards: Meets UL 325 Safety Standards.
Commercial Safety Sensors: Protect people and vehicles with safety sensors and accessories that stop the door from closing on obstructions.
Timer to Close: Integrated timer-to-close programmable from 5 to 60 seconds in 5-second increments. Allows for timed automatic door closure after the door reaches the full open position.

Single Button Control: Single button control provides an additional input for single-button control functionality. Required for installation of any external radio receiver.
Auxiliary Limit Switches: Auxiliary limit switches provide additional limit switches with dry form C contacts at the open and closed door positions to control lights, heaters and dock levelers.
Interlock Switch: Interlock switch disables the operator control circuit when door is locked, preventing damage to the door and operator.