Catalog > Consumer Electronics > Security & Alarms > Paradox Alarms Paradox | Garrison Infrared Beam Infrared Beam PDX LK-25HD LK-25HD 25M BEAM DOUBLE MODULATION {PA2903D} Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Detection range: outdoor 25m, 40m, 60m & 80mPowerful and reliable twin beam detectorEasy optical alignment with LED indicationAdjustable beam interruption period(50~700msec)Form C relay providing more applicationsAnti-Frost designTarget yellow color, structure colors, is tuned to the peak wavelengths of human vision to be easily targeted in the beam alignment