Electrical Devices

OS&Y Supervisory Switch

The Lansdale Tamper Switch is used to monitor the open position of an Outside Screw and Yoke (OS&Y) type gate valve.

  • NEMA 3R-rated enclosure
  • User-friendly mounting bracket fits newer valve yokes•
  • Single side conduit entry does not require right angle fittings 
  • Adjustable length actuator eliminates the need for cutting the shaft 
  • Accommodates up to 12 AWG wire 
  • Three position switch monitors vandal and valve close signals 
  • Two SPDT contacts are enclosed in a durable terminal block for added strength 
  • 100 percent synchronization activates both alarm panel and local bell simultaneously

UL Listed; FM Approved