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5820L Ultra Small Window Transmitter


The 5820L is nearly half the size of standard door/window transmitters. It is ideal for casement and double-hung windows.

The 5800 Series of door and window transmitters provide the most reliable, convenient and cost effective solutions for security protection. These devices are powerful and versatile enough to help solve even their installations.

With a demonstrated outdoor range of over a mile, the 5800 Series has the best performance of any transmitters available today.


  • Sleek design is nearly half the size of competitors

  • Case tamper protection (front and back)

  • Ideal for double-hung windows

  • Easy replaceable AAA Lithium battery

  • Dimensions 3.0" H x 0.5" W x 0.8" D

  • UL listed