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TX-E251 Interlogix Long-Range Extended Battery Life Door/Window Sensor

Note: Interlogix is out of business. Many items are still obtainable, but availibility is changing rapidly and all items are no longer in production. We do have some select items in inventory and can also search our distribution partners for remaining stock. Purchasing Interlogix is only recommended for service parts, not for new systems.

SKU: TX-E251
  • 10-year battery life (based on typical usage)
  • Pre-installed CR2 battery with pull tab for quick and easy installation
  • Maximum RF output power for superior range performance and longer-range applications
  • Two reed switches for additional flexibility during installation
  • Terminal block and EO resistor included for N/C and N/O external contact applications
  • Brown case cover and magnet covers included
More details...
MSRP Price: $45.54

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TX-E251 Interlogix Long-Range Extended Battery Life Door/Window Sensor
TX-E251 Interlogix Long-Range Extended Battery Life Door/Window Sensor
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Product Details

The TX-E251 Long-Range Extended Battery Life DWS is a sensor intended for installation on doors, windows, and other objects that open and close. The sensor transmits signals to the control panel when a magnet mounted near the sensor is moved away from or closer to the sensor.


  • Frequency - 319.5 MHz (Crystal based)
  • Compatibility - Interlogix 319.5MHz control panels/receivers
  • Battery Type - CR2 (GPI)
  • Typical Battery Life - Up to 10 years at 68F (20C)
  • Operating Temperature - 32F to 120F (0C to 49C)
  • Relative Humidity - 0-85% non condensing
  • Supervisory Interval - 64 minutes
  • Storage Temperature Range - -30F to 140F (-34C to 60C)
  • Regulatory - Conforms to ANSI/UL Std 634, Certified to ULC Sub C634
  • Dimensions (WxHxD) - 3.25 x 1.13 x 0.88 in.

TX-E251 Specifications PDF

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