Interlogix 2740 SERIES is a versatile magnetic switch designed for a variety of security applications. With its three independent form-C biased reed contacts, wired in SPDT configuration, it provides reliable detection of door or window openings. The switch's adjustable actuating gap distance (0.7" to 2.0") allows for precise alignment and ensures optimal performance. The durable construction, featuring brushed anodized aluminum housings and stainless steel flex-cable, ensures longevity and resistance to tampering.