The R800C GSM/GPRS HAT is a handy, low power Raspberry Pi HAT which features multi-communication functionalities: GSM, GPRS, and phone call, applicable to countries or regions with 2G network coverage, up to 85.6kbps GPRS speed. It allows your Pi to easily make a telephone call, send messages, connect to wireless Internet, and so on.

Features:

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards and Jetson Nano
• Supports SMS, phone call, GPRS, TCP/IP, DTMF, HTTP, FTPl, etc.
• UART interface, for connecting controller boards like Arduino/STM32
• Onboard voltage translator, 3.3V by default, switch to 5V via jumper
• 2x LED indicators, easy to monitor the working status
• SIM card slot, supports 1.8V/3V SIM card
• Baudrate: 2400bps ~ 115200bps (115200bps by default)
• 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 online development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32)

Specifications

GSM / GPRS / AUDIO

• Frequency band:
• GSM: 850/900/1800/1900 MHz
• Quad-band auto search
• Compliant to GSM phase 2/2+
• Emitting power:
• Class 4 (2W @ 900 MHz)
• Class 1 (1W @ 1800 MHz)
• GPRS connectivity:
• GPRS multi-slot class 12/10 (default)
• GPRS multi-slot class 1~12 (configurable)
• GPRS data feature:
• UL/DL speed: ≤85.6kbps
• Supports Packet Broadcast Control Channel (PBCCH)
• Coding schemes: CS-1, CS-2, CS-3, CS-4
• Supports PAP (Password Authentication Protocol) for PPP connection
• Supports Unstructured Supplementary Service Data (USSD)
• SMS:
• Supports: MT, MO, CB, Text, PDU
• SMS storage: SIM card
• Audio:
• Voice encode/decode mode: Half Rate, Full Rate, Enhanced Full Rate, Adaptive Multi Rate
• Support echo cancellation
• Support noise reduction
• OTHERS:
• Power supply: 5V
• Logic level: 5V / 3.3V (default)
• Operating temperature: -40°C ~ 85°C
• Storage temperature: -45°C ~ 90°C
• Dimensions: 30.2 x 65mm

Standard Raspberry Pi 40PIN GPIO Header:

• Compatible With Raspberry Pi Series Boards, Jetson Nano
• Connecting with Raspberry Pi Zero
• Connecting with Raspberry Pi 4B
• Connecting with Jetson Nano
• Connecting with Jetson Nano LITE

Note: For reference only, the above controller boards are not included.

What's On Board:

• R800C module
• RT9193-33 power chip
• MIC29302 power chip
• TXS0108EPWR voltage translator
• translates 3.3V/5V into 1.8V
• Raspberry Pi GPIO Header
• for connecting with Raspberry Pi
• Operating voltage selection jumper
• VCC-3.3V: set operating voltage as 3.3V
• VCC-5V: set operating voltage as 5V
• PWR selection jumper
• PWR-P4: startup/shutdown by the Raspberry Pi P4 pin
• 3.5mm earphone/mic jack
• R800C control header
• for easily connecting with host boards like STM32
• GSM Antenna Connector
• SIM Card slot
• R800C power on/off
• Press for 1s to start up the R800C.
• Press for 1s to shutdown the R800C after booting
• NET Indicator
• Fast flashing when module starts, flashing slowly after GSM register succeed
• Power Indicator

Pinout Definition:

Documentations:

• Wiki

Package Includes:

• 1 x R800C GSM/GPRS HAT 
• 1 x GSM Antenna 
• 1 x RPi screws pack (2pcs)