M5Stack Official SIM7080G CAT-M/NB-IoT Unit
SPECIFICATIONS
Battery Included: no
Brand Name: M5Stack
High-concerned chemical: none
Model Number: U128
Origin: Mainland China
Typical Application Fields: Internet of Things (IoT)
UNIT CatM is an international dual-mode wireless communication module supporting both CatM and NB-IoT. It utilizes the SIM7080G module solution, covering the majority of CatM and NB-IoT frequency bands worldwide, and can accommodate various data communication rate/throughput requirements. The module uses serial communication and AT command control, supporting multiple communication protocols. It integrates an SMA external antenna interface to enhance device communication quality and signal stability. It is well-suited for IoT applications such as remote control, remote monitoring, and telemedicine.
Product Features
1.SIM7080G / UART interface, AT Command control
2.Dual Mode supports CatM and NBIoT
3.Support frequency band:
4.Up and down speed:
Cat-M: Uplink: 1119Kbps Downlink: 589Kbps
NB-IoT: Uplink: 150Kbps Downlink: 136Kbps
5.Protocol Support:
TCP-UDP/--HTTP/-HTTPS/-TLS/-DTLS/-PING/-LWM2M/COAP/-MQTT and other communication protocols
6.Card slot specification: Nano
7.Development Platform:
Arduino, UIFlow
8.Module certification:
Softbank/-Telec/-RoHS/-REACH/-JATE/-Docomo/-KDDI/-RCM/CE(RED)/-GCF
Deutsche Telekom/-FCC/-PTCRB/-AT&T/-Verizon/-T-Mobile/US Cellular/IC
Include
1x CatM Unit
1x HY2.0-4P cable
1x Hexagon Wrench
1x SMA antenna
Application
Remote Data Collection/Cloud

- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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