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Operating voltage:9V,6F22
Bettery life:1 years
Infrared photoelectric sensor
Radia Frequency: 433M
Radio distance:more than 100m(open area)
Alarm volume: more than 85dB/m.
http://www.karassnsecurity.com
wireless interconnected smoke detectors KS-620PHR Wireless P
Quanzhou Karassn Security Protection Electronics Co., Ltd.
security, alarm, system
