Wireless alarm & doorbell

Wireless PIR alarm,siren,4 Musical Tones Wireless Doorbell ,12 Musical Tones Wireless Doorbell,etc.

Wireless PIR Alarm & Wireless External Siren

Features: * 433.9MHz or 315MHz radio frequency * Sphere-crown PIR movement detector, with detection range approx. 6 meters at 90篴ngle * Up to 15 meters operation range (in open space) * On-the-spot
12 Musical Tones Wireless Doorbell

Main Features:
* Easy to installation and operate

* 433.92MHz radio frequency
* 12 selectable musical tones
* Water-resistant Bell Push
* Approx. 50 meters (in open space)
Sell Wireless External Siren

Main Features:
;◎ ; Able to work in conjunction with Wired or Wireless Alarm System
;◎ ; 433.92MHz radio frequency
;◎ ; Operational distance up to 30 meters (in open space)
;◎ ; High pitch

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