Specification :
FWT GSM - 4 Port
SIM card: Support 3V/1.8 V (adaptive) G-SIM card
- Phone interface: DTMF line interface (RJ-11 phone interface)
On-hook voltage: 45V
Off-hook current: 30 mA/41mA
Dialing tone frequency: 450 Hz
- Antenna interface: antenna gain > 3.5 DB
Sensitivity < -104 DBM
Antenna transmission power: < 3 W
Impedance: 50 ohm.
- Series interface: RS-232 (Use the appointed data cable)
- Working environment:
Operation temperature: -20 ~ 60
Operation humidity: 45% ~ 95%
Store temperature: -20 ~ 60
Atmosphere pressure86 ~ 106 Kpa
Environment noise< 60dB
