The SIM7028 NB-IoT HAT is a compact, low-power Raspberry Pi expansion board with NB-IoT (Narrow-Band Internet of Things) connectivity. It supports global NB-IoT bands and a wide range of communication protocols including TCP, UDP, MQTT(S), HTTP(S), CoAP, and TLS/SSL.

Designed for applications requiring low latency, low power, and low throughput, this HAT is ideal for IoT projects such as remote monitoring, asset tracking, smart metering, and environmental sensing. It connects via the standard 40-pin GPIO header and is compatible with Raspberry Pi, Jetson Nano, Arduino, and ESP32 boards.

Key Features

• Global NB-IoT Support – Works with NB-IoT bands worldwide via the onboard SIM7028 module
• Multiple Protocols – TCP, UDP, LWM2M, CoAP, DTLS, DNS, NTP, PING, HTTP(S), MQTT(S), TLS/SSL
• 40-Pin GPIO Header – Compatible with Raspberry Pi series boards, Jetson Nano, and more
• UART Control Pins – Connect to Arduino, STM32, or ESP32 via UART with configurable jumper
• USB-C Debug Interface – Onboard USB-to-UART converter for direct serial communication
• Nano SIM Slot – Compatible with NB-IoT SIM cards
• AT Command Control – 3GPP TS 27.007, 27.005, and SIMCOM enhanced AT commands
• Configurable Baud Rate – 2,400 to 460,800 bps (115,200 bps default)
• SIM Application Toolkit – SAT Class 3, GSM 11.11, USAT
• LED Indicator – Monitors working status at a glance

Ideal For

• Remote environmental monitoring and smart metering
• Asset tracking and fleet management
• IoT sensor networks with low data throughput
• Smart agriculture and remote healthcare

Package Contents

• 1× SIM7028 NB-IoT HAT
• 1× GSM Antenna
• 1× USB Type-A to Type-C Cable
• 1× 2×20-Pin Female Header
• 1× Standoffs Pack

Resources

• SIM7028 NB-IoT HAT Wiki – Setup guides, examples for Raspberry Pi, Jetson Nano, Arduino, and ESP32