Brand ChuangZhuo Model RPIGSM Quantity 1 Piece Color White Material CCL + PCB board + Semiconductor Chipset WPSD16 English Manual / Spec No Other Features Description: RPI GSM Adapter is an adapter which accomplished communication by the direct connection between Raspberry Pi GPIO and the GSM/GPRS Module-EFCom Pro. We designed two GPIO interfaces in parallel connection therefore RPI GSM Adapter can not only connect to Raspberry Pi GPIObut also connect to the modules compatible with Raspberry Pi GPIOlike our RPI TFT LCD AdapterRPI BRD Adapter. In addition for the circuit we use the strong DC_DC external power supply plus a toggle switch so you can either choose the raspberry pie internal power supply or select an external one. Note: When RPI BRD Adapter connected with Raspberry Pi GPIO please make sure their pins are corresponding with each other. Parameter: Compatible with GSM/GPRS Module-EFCom Pro Switchable and strong external power supply Unique design more convenient for connection Dimension 46.2mmx35.1mm Applications Communicate with GSM/GPRS Module-EFCom Pro Connect with modules compatible with Raspberry Pi GPIO Packing List 1 x Raspberry Pi Connection GSM/GPRS Adapter