This document is a confidential document of Maestro Wireless Solution Ltd., which introduces the user manual of Eco Lite Ext. The manual includes safety precautions, installation guide, working with Maestro 100, specifications, appendix, and troubleshooting.
This manual introduces the Maestro Eco Lite Ext GSM modem, covering safety precautions, required accessories, and the basic hardware interfaces such as the SMA antenna connector, 15‑pin Sub‑D serial/audio port, and 4‑pin power connector. It explains how to mount the device, install a SIM card, connect an external antenna, and power the unit using a 5‑32 V supply.
The guide also details AT command usage for voice, data, fax and SMS functions, lists the technical specifications (frequency bands, power output, GPRS class, dimensions, and temperature range), and provides troubleshooting tips for common issues like LED status, network registration, and audio problems.
| Supported frequency bands | 850 / 900 / 1800 / 1900 MHz |
|---|---|
| Maximum power output | 2 W (900 MHz), 1 W (1800 MHz) |
| GPRS class | Class B Class 10 (4Rx+1Tx or 3Rx+2Tx) |
| Input voltage range | 5 V – 32 V |
| Rated current | 650 mA |
| Overall dimensions | 88 mm × 60 mm × 26 mm |
| Weight | 100 g |
| Operating temperature (Ext model) | -30 °C to +75 °C |
An external GSM antenna with an SMA male connector, 50 Ω impedance, and suitable for the GSM frequency bands must be used.
The modem requires a DC supply of 5 V to 32 V with a rated current of 650 mA; the included power cord has a fuse for protection.