Features:
1.Support PSTN and GSM network
2LCD display: Signal strength, battery volgage, telephone numbrer,
talk time 3Menu operation.
4Looking terminal, Locking SIM Card
5Support DTMF to display Caller ID.
6Flexiblely set Barred number
7Choose outgoing route PSTN or GSM network
8Support reversal polarity for billing (16khz and 12Khz is
optional)
9Indicating ring for new incoming call while one route is busy
10．Set up local area code
11．Support external 6v/4AH lead-acid battery
12．Self-Inspection and error report
13．Real-time clock
Technical Specification:
Application environment
Operating temperature0~+45C
Relative humidity10%~95%
Environment noise60dB(A)
Atmospheric pressure86~106kPa
GSM parameters
Frequency bands
GSM900/1800/1900 MHz automatic switch(WTN302-1A)
GSM850/900/1800/1900 MHz automatic switch(WTN302-1B)
Frequency stability<2.5ppm
Receiver sensitivity< 103dBm
Transmit power<2W(900MHz), <1W（1800MHz）
SIM card Interface3V
Antenna impedance50
Line interface
AB line impedance600
AB line loop current25mA
AB line feeding48V±4V (hang-up status)
Others
Adapter output: DC7.5V, 1.5A
Battery: 4Ah, 6V lead-acid battery (Full battery support 6-8 hours
talk time or 72 hours standby status. The time is subject to local
network)
Package：10pcs/Carton
Inside boxDimension:32×18.5×5.5(cm) G.W.0.7kg
External carton Dimension:40×36×32(cm)G.W. :8.0kg
