U111-B · M5Stack
Unit NBIoT2 is an NB-IoT wireless communication module suitable for global Cat-NB frequency bands. It features the built-in SIM7028 communication module, uses serial communication (controlled via AT command set), and integrates an SMA external antenna interface, significantly improving the communication quality and signal stability of the device. The SIM7028 module supports multi-band NB-IoT network connectivity, ensuring wide applicability worldwide. Designed for low-latency, low-throughput… (M5Stack U111-B)
| Part number | U111-B |
|---|---|
| Manufacturer | M5Stack |
| Category | Communication & Wireless › Cellular (2G / 4G / NB-IoT) |
| Pins | 4 |
NB-IoT 2 Unit Golbal Version (SIM7028) with Antenna pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | SIG1 | bidirectional | PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map |
| 2 | SIG2 | bidirectional | PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map |
| 3 | 5V | power | |
| 4 | GND | ground |
Schematic symbol and footprint
Schematic symbol
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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