Waveshare NB-IoT GSM SIM7020E communication module for Raspberry Pi Pico - model WSR-19357

Waveshare NB-IoT GSM SIM7020E communication module for Raspberry Pi Pico is a compact cellular modem board that adds NB‑IoT and GSM data connectivity to projects that use the Raspberry Pi Pico as a host controller. Based on the SIM7020E chipset, the module provides low-power wide-area networking suitable for intermittent small-packet data exchange over mobile networks, enabling remote sensors, telemetry nodes and asset tracking devices to send and receive information without Wi‑Fi or Ethernet.

Advantages

The module delivers cellular connectivity in a small form factor compatible with Raspberry Pi Pico, supporting both NB‑IoT and GSM modes through the SIM7020E chipset. Its design focuses on low power consumption and reliable long-range communication for IoT deployments. Integration with Pico-level interfaces simplifies hardware connections and firmware control, while the board’s firmware- and network-level features support standard AT commands for data transmission and network management.

Suitable for

• Remote environmental sensors and telemetry
• Asset tracking and fleet monitoring with low data rates
• Low-power wide-area IoT applications (NB‑IoT)
• Prototype and development projects using Raspberry Pi Pico

Key specifications

• Cellular chipset: SIM7020E supporting NB‑IoT and GSM communication modes
• Host interface: compatible with Raspberry Pi Pico GPIO and serial control (UART/AT commands)
• Power: designed for low-power operation appropriate for battery-powered IoT nodes
• Form factor: compact module board suitable for direct connection to Pico or wiring into custom circuits
• Use case focus: optimized for small-packet telemetry, sensor data uplink and occasional downlink messages

How to use

Connect the module to a Raspberry Pi Pico according to the manufacturer’s pinout and power requirements, ensuring a compatible SIM card and network coverage for NB‑IoT or GSM. Use a UART serial connection from the Pico to the module and control the modem with standard AT commands to register on the network, configure PDP contexts or NB‑IoT parameters, and transmit or receive data. Implement power-management routines in the Pico firmware to take advantage of the modem’s low-power modes and schedule transmissions to minimize energy use. Consult Waveshare documentation or example code for initialization sequences, required voltage levels and recommended wiring diagrams.

Usage recommendations

Verify network operator support for NB‑IoT in your region and select appropriate APN and network parameters before deployment. For battery-powered installations, use periodic wake-and-transmit strategies and enable the modem’s sleep modes to extend operational lifetime. Keep antenna placement clear of metallic enclosures and test signal strength at intended installation sites to ensure reliable connectivity.