Interfaces:

u 1 Serial port (3.3V TTL Voltage level /RS232 Voltage level optional,115200bps, 801.N. No hardware flow control）

u Power supply（DC 7.5V 、500mA）.

u Antenna interface.

u Status lights（Red light indicate power status, Green light indicate network status）.

u SIM card holder.

 Features:

u Supporting both Chinese/English SMS data communication.

u Supporting 900/1800/1900 MHz GSM Tri band, better signal quality

u Status lights indication

u Supporting AT Command Set

u Standard RS-232 serial port, easy to use

u Industrial standard design and quality guarantee

Specifications:

u Operation temperature ：-25 -+60℃   

u Storage temperature：-35 -+80℃ 

u Humidity ：0 -95％ non-condense      

u Receive Sensitivity：-102dBm

u Maximum Transmit Power：1W         

u Dynamic range：62dB

u Frequency tolerance ：≤±0.1ppm     

u Power supply：5V、7.5V 、12V optional, and can be changed according to customer’s requirement.
u Current：standby 50mA，work 300mA 。
u Weight： 250g

Installation:

a)    Open the package box and take the GSM MODEM out，check all components within the package box according to the packing list

b)    Remove the GSM modem’s back-cover with a screwdriver, open the SIM card holder, insert in a valid SIM Card provided by GSM network operator or service provider. Choice the serial port output voltage by properly set the jumps. Then, fix the back-over back.

c)    Fix the GSM-MODEM to a proper location and connect the antenna to its interface. d) Fix the data line to the GSM MODEM side first, and then, connect the other side to user’s equipment’s data port. e) Connect the GSM-MODEM power supply interface with the power adapter’s output jack, and then connect the adapter to its power supply source.

Make sure that all connections are correct and proper, then, turn on power.