Features:

1. Easy to install, maintain;

2. Allow PIN code entering and reciprocal phone-card lock;

3. Provide optimized circuit directly connecting the exchange device;

4. Polarity reversal signal for metering;

5. 3.5dBi gain antenna;

6. Compatible to PABX;

7. Suitable for call termination of ISP;

8. Incoming call reminder, time display;

Specifications:
1. Frequency range:
GSM 900/1800MHz; GSM 850/1900MHz;

GSM 850/900/1800/1900MHz selectable;

2. Max power: 0.25W / 0.5W;

3. Standby time: 48 hours;
4. Idle current: <30mA;

5. Working current: <400mA;
6. Sensitivity: -105dB;
7. Working temperature: -10 degree - +40 degree;
8. Working humidity: 45% - 90%;
9. Atmosphere pressure: 86 - 106Kpa;

10. Humidity: 0-95%;
11. Environment noise: <60dB;
12. Antenna amplifying: 3.5-12dB;
13. AC Input: 110-240V/50-60Hz;
14. Colors: White, Black, Blue etc. selectable;