The Interlogix (now Ecolink) TX-E221 is a compact, recessed wireless door and window sensor designed for discreet security. It installs hidden inside the door or window frame, making it completely invisible when closed, and operates on a 319.5 MHz frequency compatible with Interlogix, GE, and Qolsys systems.
Key Specifications
- Wireless Frequency: 319.5 MHz (crystal-based)
- Battery: 3V Lithium CR2
- Battery Life: Up to 5 years (depending on usage)
- Magnet Gap: Up to 1 inch maximum
- Operating Temperature: 32°F to 120°F
- Dimensions: 0.75" diameter x 2.5" tall (Sensor), 0.75" diameter x 0.5" tall (Magnet)
Product Code: TX-E221