![SIM900 four frequency GSM/GPRS module Core board SIM900 four frequency GSM/GPRS module Core board](https://www.bifelectronic.com/2532-large_default/sim900-four-frequency-gsm-gprs-module-core-board.jpg)
1.On board SIM900 four frequency highly integrated GSM/GPRS module.
2.On board the IPX patch antenna, convenient external GSM antenna.
3.On board 40 p FPC/FFC flexible ribbon cable connector, convenient link control panel.
4.On board UART interface, meet different user requirements.
5.PCB board size: 55 (mm) x 30(mm).