The Greenlee PE620 Loop Verifier is part of Greenlee's premium collection of tools and accessories. This loop verifier is designed specifically for the security and alarm industry, and can be connected to a normally open or normally closed loop pair. It provides a distinct audible tone with the alarm condition occurs, and it has a latching feature that provides a simple method for identifying intermittent failures (swingers) and confirming operation of switches at remote locations.
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