The BEAMLRK allows reflected beam detectors to be installed at separations between 230 and 328 feet (70 to 100 meters). At these distances, four 8" × 8" reflectors must be used to provide enough reflected infrared light. This kit includes 3 additional reflectors with new test scale legends. The reflector included with the transmitter/receiver unit is the fourth reflector to be used.
System Sensor (BEAMLRK) Miscellaneous Kit, System Sensor ADI India, System Sensor