Interlogix Crystal Door/Window Sensor
With a 10+ year maximum life battery and advanced circuit design, the wireless door/window sensor from Interlogix provides effective security. Two-axis sensing and wireless technology make installation simple, even in tight spaces. The door/window sensor also features an optimized internal antenna design to increase range performance. Designed to monitor doors, windows, cabinets or virtually anything that opens, these sensors are compatible with new and existing Protect America system.