Check the listing for details. Brand New GE Interlogix TX-E201 Wireless Door Window Sensor, Magnet, XT, XTi. Color: White, Condition: New. Listed at 24.99 USD. Brand New GE Interlogix TX-E201 Wireless Door Window Sensor, Magnet, XT, XTi The TX-E Series Door/Window Sensor from Interlogix® is a compact, low profile contact that provides intrusion detection for application in homes and small businesses. This sensor comes with both white and brown covers and can easily be installed on doors, windows, cabinets or other items that can be opened and closed. The TX-E Series Door/Window Sensor also contains a replaceable lithium battery that lasts up to five years under normal usage. What's in the box(1) Interlogix Wireless Door/Window Sensor(1) Magnet(1) CR2032 Battery Frequency: 319MHz (Crystal based)Battery: CR2032Battery Life: 5 years, typicalOperating Temperature :32°F (0°C) to 120°F (49°C)Operating Humidity : 5-95% non condensingSensor Dimensions : (WxHxD) :2.25 x 1.0 x 0.25 in. (5.715 x 2.54 x 0.635 cm)Magnet Dimensions : (WxHxD) 1.37 x 0.5 x 0.25 in. (3.47 x 1.27 x 0.635 cm)Magnet gap : 0.625 in. maximum