Main Features
1. Conversion of wire/wireless Communication
2. Auto select economic route (LCR)
3. Call transfer function
1. It can receive call from PSTN and transfer out through GSM
2. It can receive call from GSM and transfer out through PSTN
4. Auto-convert head codes and dial out
5. Short-code setting and dialing (100 sets)
6. Volume modulation and echo cancel
7. Support caller ID: DTMF Mode
8. If no power, call will be forced to dial out from PSTN
9. Limit of communicating time
10. With LCD: Display data and time, Dial number and operator name
11. Built-in 1 FXO and 1 FXS

Technical specifications:
Power supply:
AC input voltage: 100V~240V AC
Power adaptor output: DC7.5V/1.5A
Battery: 6V/4AH Lead-Acid battery(optional)
Maximum charging current: 600MA
DC input voltage range: 7.5V~10V DC
Maximum working current: 700ma(DC7.5V, Average current, excluding charger current)

Application environment:
Operating temperature: 0~+45 Celsius
Relative humidity: 10%~95%
Environment noise ??60dB(A)
Atmospheric pressure: 86~106kPa

GSM parameters:
Frequency bands: GSM900/1800 MHz automatic switch
Frequency stability <2.5ppm
Receiver sensitivity <
Transmit power: <2W(900MHz), <1W(1800MHz)
SIM card Interface: 3V
Antenna impedance: 50??

Package: 10PCS/Carton
Inside box:
Dimension: 32*18.5*5.5(cm) G. W.: 0.7kg
External carton: Dimension: 40*36*32(cm) G. W.: 8.0kg