Direction identified motion detector to identify the intruder' s motion direction, automatically identify intruder and master. It adapts intelligent high technology to identify human being related time and, space motion location direction so that it is good for identifying intruder and master. Specification: Working voltage: 12V battery Frequency: 315MHz/433MHz Working temperature: -15 ' C -55 ' C Detecting rang: max 9meter (when presetting to identify direction); max 12meter without presetting to identifying direction) Static current: < 30HA Alarm current: < 20mA Installation: 2 -2.4m (above the ground) Anti-electromagnetism : > 30 v/m Anti-white-light : > 6500 LUX Size: 110?0?0mm N. W.: 130g