LiftMaster Mechanical Limit Switch | LIF-WS-SENSOR 841LM Operator with external

Operator with external

chain (black oxide)

Also available in 20' (See model NICE-WA22)

Soft start/stop operation extends the operator and hardware life for heavy-duty gate use

a 5’ Resistive Safety Edge (Model S505AL)

LiftMaster Mechanical Limit Switch | LIF-WS-SENSOR 841LM Operator with externalLiftMaster Mechanical Limit Switch LIF WS SENSOR The LiftMaster mechanical limit switch WS SENSOR monitors whether a dock leveler is deployed or a truck restraint is engaged, does not require power. Allows you to analyze productivity when used with myQ Business Facility. Requires a Dock Door Operator Model DDO8900W with the LMi5 Interface Device.