Issue AT+CSQ to poll the Received Signal Strength Indicator (RSSI). This confirms if the 5-meter antenna setup is successfully pulling clean decibels.
[4G-LTE] - [5M] - [H05] - [C01] - [MV2.219] | | | | | Network Bandwidth Hardware Config Firmware Type Cap Revision Code Version 4g-lte-5m-h05-c01-mv2.219
: Providing a secondary internet source for small businesses if their primary cable or fiber line goes down. Maintenance and Troubleshooting Issue AT+CSQ to poll the Received Signal Strength
: Reset the device by holding the physical reset button for 10 seconds while powered on. Maintenance and Troubleshooting : Reset the device by
| Module | Category | Max Speed | Hardware | Firmware | Typical Price (2025) | |--------|----------|-----------|----------|----------|----------------------| | Quectel EG91-NA | Cat 1 | 10 Mbps | EG91 R02 | v1.2.8 | $18 | | Sierra Wireless HL7800 | Cat M1 | 375 kbps | HW 2.0 | v5.1.4 | $15 | | | Cat 1 limited | 5 Mbps | h05 | mv2.219 | $19-24 |
Modules like this are the "engine" inside various internet-of-things (IoT) and mobile broadband devices:
This complex technical string is not random. It is structured into standard operational blocks designed to convey hardware capabilities, module revisions, and specific firmware baselines: