PIR Motion Detector EL-55 also called pir detector, security motion detector. It's wired with relay output function, stable to use. Features: Analog signal processing PIR detector Temperature compensation Dual element Superior RFI, EMI, ESD and lightning protection Thermal optic stabilization cavity Technical Parameter: Pyroelectric Sensor Type Dual element Maximum Range 14m x 14m Current Consumption in Standby 15mA @ 12V Current Consumption in Alarm 17mA @ 16V Power Supply 9-16VDC Pulse Count 1,2 or 3 selectable RFI Immunity 30V/m up to 1GHz z Operating Temperature -10° to 60°C Temperature compensation Analog Reverse Polarity Protection Diode LED indicator Selectable Dimensions 11.4x 6 x 5cm MB2 Support Yes LENS options Standard/ Curtain/ Long range Relay Parameters N.C Dry contacts Switching 30Vdc