1.metals shield anti-fire ABS
2.connecting mode: N.C. normally closed
3.rated current : 100mA
4.rated voltage : 200 VDC
5.operating distance: more than 15mm, less than 25mm
6.rated power: 3W
No external power supply, connect to wired or wireless alarm control panel GND and N.C ports directly! Please note that this item not fit to iron door, It will decline magnetic of the sensor.