) Simple to install and easy to maintain
2) Steady module and reliable design ensures good performance
3) Provides optimized circuit directly connecting the exchange device for
extensions
4) Compatible to most telephones, PBX and VoIP gateways (for call
termination)
5) Strong signals with high gain antenna
6) Attractive plastic casing
7) SIM card supported (3V, 5V)
8) Caller ID display
9) Provides reversal polarity signal for metering
10) No noise and clear voice
11) Suitable for wide voltage range and low power consumption
12) Suitable for all kinds of weather and environment
13) RJ-11 ports (two extensions: line / phone and line (optional))
14) Locking PIN / network (optional)

1) Air interface standard: GSM 900 / 1800MHz phase 2+
2) Frequency ranges:
a) GSM 900:
i) Transmission: 890 ~ 915MHz
ii) Reception: 935 ~ 960MHz
b) GSM 1800:
i) Transmission: 1,710 ~ 1,785MHz
ii) Reception: 1,805 ~ 1,880MHz
3) Channel space: 200kHz
4) User line, bell signal: in line with GB/T15279
5) Max power: 0.25W / 2W
6) Consumption:
a) Immobility: less than 25mAh
b) Transmission: less than 400mAh
7) Sensitivity: -105dB
8) Dial tone frequency: 450MHz (standard)
9) Surrounding temperature: -10??C ~ +40??C
10) Relative humidity: 45% ~ 90% (without frost)
11) Atmosphere pressure: 86 ~ 106KPa
12) Environment noise: