OverviewThis is a handy, low power Raspberry Pi HAT which features multi communication functionalities: GSM, GPRS, and Bluetooth. It allows your Pi to easily send messages, connect to wireless Internet, transfer data via Bluetooth, and so on. Features Standard Raspberry Pi 40PIN GPIO extension header, compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B and later versions, Jetson Nano Supports SMS, GPRS, DTMF, HTTP, FTP, MMS, email, etc. Bluetooth 3.0, supports data transferring through Bluetooth UART interface, for connecting host control boards like Arduino/STM32 Onboard voltage level translator, 3.3V by default, switch to 5V via jumper 2x LEDs for indicating the module working status SIM card slot for 1.8V /3V SIM card Baudrate auto detection (1200bps ~115200bps) Control via AT commands (3GPP TS 27.007, 27.005, and SIMCOM enhanced AT Commands) Supports SIM application toolkit: GSM 11.14 Release 99 Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32) Package ContainsSIM800C GSM/GPRS HAT x1GSM Antenna x1Bluetooth Antenna x1USB type A plug to micro plug cable x1RPi screws pack (2pcs) x1