- Quad Beam Detection Four (4) synchronized pulsed infrared beams ensure ultimate stability in any applications. False alarms due to falling leaves and small animals are virtually eliminated. - Range: 60/100/160m(Outdoor), 120/200/320 (Indoor) - EDC(Environmental Discrimination Circuit) Beam reception level is severely dropped in heavy fog, snow and rain,often causing unwanted alarm activations. In case of such conditions, environmental trouble signal is sent to the controller to distinguish from intrusion. EDC gives additional stability in harsh environments. - Beam Power Control This unique feature controls the volume of beam transmission level according to the installed range. The unit transmits only the optimal beam energy required for each application, preventing reflection on nearby walls and cross talk with other detectors. - 100 Times Sensitivity Allowance Stable operation is maintained even if 99% of beam energy is lost by fog, snow or rain. - IP Rating: 54 Protection from rain, dust and insects. - Alignment Check Terminals For fine beam alignment with voltmeter - Beam Interruption Time 50-500msec (adjustable)