Alarm systems - Intrusion and hold-up systems - Part 2-5: Requirements for combined passive infrared and ultrasonic detectors; Supplement 1: Interpretation Sheet 1; German version EN 50131-2-5:2008/IS1:2014
报警系统.入侵和拦截系统.第2-5部分:组合被动红外和超声波探测器的要求;补充1:解释表1;德文版EN 50131-2-5:2008/IS1:2014