Elevator Door Detector Elevator Light Curtain, Elevator Infrared Sensor 917 series center-opening passenger elevator optical screen Technical performance of optical screen Single Tube Scanning Period 2ms Single-beam Infrared Light Modulating Frequency 4000Hz + -30pm Single-beam Infrared Light Modulating Space Ratio 1: 2 Signal Connection Cable 4m special 4-core shielded cable, 200mm cable with detector System Testing Info Display Normal, Shield, Malfunction Way of Display One red and one green padding luminotron Detector CMOS Chip Grade Industrial Lightproof Performance >=1000lux Temperature Test-25--85 degree Component High-temperature Aging Test 150 degree Vibration Test 20Hz, 1. 26mm, 1G Dielectrical Intensity >=1500W Working Temperature-20--65degree Electromagnetic Compatibility Conform to EU CE Standard Electric Transient Pulse 1. Signal input wire: peak value 500V; 5 / 50ns (Tr / Td) ; 50Hz repeated frequency Terminal: peak value 1000V; 5 / 50ns (Tr / Td) ; 50Hz repeated frequenc