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The use of GSM wireless communication network，Alarm message can be used
Circulatory dialing four telephone, cell phone, or pager numbers, and each phone number could be up to 16 digits.
Easy programming, parameters and data will be saved and will not lost during power down
Alarm report dial could be triggered by normally-open relay, normally-closed relay, or 12V DC power supply
Alarm reporting will include a 20-second recorded voice message and this recorded message could be updated
Alarm can be used for any host connected to realize telephone voice alarm
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★Power supply：11 - 15V DC
★Static state current：20mA
★Telephone recording time：20 seconds
★Telephone numbers：Four sets
★Dial method：Audio
★Alarm report input：normally-open relay, normally-closed relay, or 12 DC line
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