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Explosion-proof Sensor DC9V Wireless/Wired Burglar Alarm Shutter Door Sensor(MC-J01/YJ01)
It is Waterproof, explosion-proof, and suitable for rolled-up door installation of the garages, the shops, the financial systems and so on.
Technical specifications:
Power supply: DC9V battery
Working frequency: 315MHz/433MHz
Gap for triggered: >30-50mm
Stand-by current: 0.01W
Alarm current: 0.09W