The MS1 is unmatched in ease of installation and durability. Simply “snap” the MS1 onto the shaft that is to be monitored and complete the wiring. The cost to install other types of speed monitoring products usually surpass the cost of the MS1. Because the MS1 is not permanently attached to the conveyor shaft, it is considered to be “break-away” in design. In other words, safety concerns are at a minimal. The other breakaway characteristic benefit is to insure that if an object strikes the MS1, no damage will occur. The MS1 simply detaches from the shaft. The proximity switch in the MS1 is a standard two-wire 18mm tubular switch that is capable of handling voltages of 40 to 120v Ac or 20 to 200v Dc. If your specifications require namur or other inductive proximity outputs, the MS1 can be retrofitted. The coupler that guards the proximity switch is fitted with a site hole whereas operation of the MS1 can be monitored. In proper operation, a highly visible red LED will illuminate that determines if the MS1 is sending pulses correctly. The MS1 is equipped with a 24 inch plastic cable guard with ½”npt threaded connector to assist in completing the wiring. The shaft size of the conveyor that is to be monitored needs to be larger than 1 15/16 to insure proper holding strength for the magnetic rotor on the MS1. If your equipment shaft diameter is smaller than 1 15/16", the MS1S is available.