1,GSM cellular network outgoing.
2,GSM cellular network incoming.
3,DTMF Caller ID.
4,Support secondary dial.
5,Lock card, lock terminal.
6,Send polarity reversal signal for billing meter while connection.
7,Sending 12/16KHz pulse for billing meter while connection is also compatible.
8,Support GPRS . (Optional)
9,Rechargeable battery, keep conversation for at least 3 hour when out of mains supply. (Optional)
10,Transmit tariff for our company phone billing meter. (Optional)
Technical Specifications
1,Work frequency: GSM 900MHZ/1800MHZ or GSM 850/900/1800/1900MHZ
2,Power2 W
3,Sensitivity: -104dB
4,power consumption: Static ≤25mA, Transmit≤600mA
5,Ambient noise60dB
6,Power Supply: DC 5Vadapter AC 110~240 input
7,DTMF Receive: > -23dB insure receiving.
8,DTMF Receive sensitivity: 99.99%
9,Insertion loss0.5dB
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