Counterweight displacement kit - ring on a string

The Counterweight Displacement Kit is an easily installed "ring on a string" hardware kit that, when used in conjunction with a relay circuit (not included), can signal the controller if a counterweight has been displaced......The Counterweight Displacement Kit is an easily installed "ring on a string" hardware kit that, when used in conjunction with a relay circuit (not included), can signal the controller if a counterweight has been displaced due to a seismic event. Two steel cables run parallel to the counterweight guide rails and pass through a pair of eyebolts located on the counterweight. If an eyebolt contacts a cable (which indicates a counterweight displacement), the circuit is completed and the controller stops and redirects the car immediately. Order one kit and one cable per elevator - the kit attaches to BOTH counterweight rails (as shown). Note that the kit is specified for the rail size and the cable ordered should be at least twice the rise of the elevator - the cable will be cut and installed on both rails.