Chonghan CH-M2 Wireless Modem User Manual

About this manual

This manual describes the CH-M2 series wireless modems, providing information to help users understand the product, troubleshoot issues, test functionality, and install the devices in projects. It includes safety warnings, liability statements, and contact details for Chonghan Technology.

The document contains AT command usage, SMS sending/receiving procedures, a product list with model variants (CH-M2G5H5, CH-M2C3H2, CH-M2T2H1), hardware specifications such as power adapter and USB interface, and a glossary of technical terms. This manual is written in Chinese.

What's inside

• Important Notice
• Safety and Hazards
• Liability Limitation
• Copyright Information
• Trademark
• Contact Information
• AT Commands
• SMS Function
• Overview
• Product List

Specifications

Frequently asked questions

How can I send a Chinese SMS with the CH-M2 modem?

Use the AT command "CH-M2G5H5 发送中文短信" to transmit a Chinese text message.

Which AT command answers an incoming call?

The command "ATH" is used to answer an incoming call.