Ecolink TX-E201 Wireless Door/Window Sensor operating on 319.5MHz frequency. Compatible with a wide range of professionally monitored and DIY home security systems using the 319.5MHz protocol. Two-piece magnetic contact sensor — one piece mounts to the door or window frame, the other to the moving panel. When contact is broken, the sensor transmits a signal to the alarm panel.

Key Features:

• 319.5MHz wireless frequency
• Compatible with major 319.5MHz alarm panels
• Easy surface-mount installation
• Factory sealed — never opened
• Rev F hardware revision

Compatible with: Interlogix and Qolsys 319.5MHz alarm panels (including Qolsys IQ Panel 2 with Interlogix daughtercard). Simon and Concord 4 panels also supported.