*Digital quad-beam detection from 60 to 200 meters for long distance appliance without cross talk

*Eight-channel beam frequencies selectable when installing up to four units

*Power input: 11 to 30 V DC (no polarity)

*LED alignment with 10-level LED indicator, to be quicker and more accurate

*Adjustable beam interruption period (50 to 700 milliseconds)

*Lighting and surge protection, automatic gain control circuit

*CE, RoHS and IP66 certified