User's Manual

3
further reference.
2. Interfaces
 1 Serial port, （3.3V TTL Voltage level /RS232 Voltage level optional,115200bps、8、
1、N，No hardware flow control）
 Power supply（DC 7.5V）
 Antenna interface
 Status lights（Red light indicate power status）
 SIM Card Holder
3. Features
 Supporting both Chinese/English SMS data communication
 Supporting 850/1900 MHz GSM Quad band, better signal quality
 Status lights indication
 Supporting AT Command Set
 Standard RS-232 serial port, easy to use
 Industrial standard design and quality guarantee
4. Specifications
 Operation temperature ：-25 - +60℃
 Storage temperature：-35 - +80℃
 Humidity ：0 - 95％ non-condense
 Receive Sensitivity：-102dBm
 Dynamic range：62dB
 Power supply： 7.5V
 Current：standby 50mA，work 300mA
 Weight： 250g