TX-E231 - Wireless Door/Window Sensor, 319.5 MHz, Back Tamper & Mounting Plate. Qolsys/GE & Interlogix Compatible.

Surface mount wireless Door/Window sensor. Back tamper, cover tamper. External contact design. Thin and small design that blends in with décor. Optimal wireless range for most residential or light commercial applications.  Compatible with Qolsys/GE & Interlogix 319.5MHz wireless protocol Proven reliable wireless technology Back Tamper, Cover Tamper, Mounting Plate  External contact input. 6" flying lead connection. Normally Closed 5/8" magnet gap Snap-on interchangeable brown case (included) Replaceable lithium battery (CR2032) 5-8 year battery life based on usage FCC and IC approved SKU: TX-E231