Technical specifications
GSM parameters
Frequency bands GSM900/1800/1900 MHz
Frequency stability <2.5ppm
Transmit power <2W(900MHz), <1W(1800MHz)
SIM card Interface 3V
Antenna impedance 50Ω

Power supply
AC input voltage 160V~300V AC
Power adaptor output DC7.5V/1.5A
Battery 6V/4AH Lead-Acid battery(optional)
Backup battery:
Standby time 48hours
Talking time 3-4hours
Maximum charging current 600MA
DC input voltage range 7.5V~14V DC
Working current 1.5A(DC7.5V, Average current, excluding charger current)

Application environment
Operating temperature: 0~+45C
Relative humidity: 10%~95%
Environment noise ≤ 60dB(A)
Atmospheric pressure 86~106kPa
Package: 4PCS/Carton
Inside box Dimension: 26× 23× 35 (cm) G. W.: 2.7kg
External carton Dimension: 52.5× 47.5× 36 (cm) G. W.: 12.00kg

Packaging Details
Unit Type: Piece
Package Weight: 6.0kg (13.23lb. )
Package Size: 30cm x 30cm x 30cm (11.81in x 11.81in x 11.81in)