ZLG ZWD-35A Quick Start Guide

About this manual

This guide provides the essential steps to get the ZWD-35A wireless data transmission device up and running quickly. It covers antenna inspection, SIM card installation, serial and USB connections, and power‑on checks.

The document also lists ZLG's sales and service network across major Chinese cities and includes reference to the full user manual for detailed configuration. This manual is written in Chinese.

What's inside

• 适用范围
• 快速使用步骤
• 天线检查
• SIM 卡安装
• 串口通信线缆安装
• 电源端子
• USB 接口连接
• 参考资料
• 免责声明

Specifications

Frequently asked questions

How do I check the antenna on the ZWD-35A?

Open the device packaging, inspect the antenna for looseness and tighten it if necessary; using a mismatched antenna can cause signal loss and increased power consumption.

What is the correct way to install the SIM card?

Insert the SIM card as shown in the diagram, ensure the account is active and 3G data is enabled, and never insert or remove the SIM while the device is powered.

How should I connect the serial communication cable?

Connect the RS-232 cable matching the voltage levels and color coding as described in the user manual; the ZWD-35A uses a standard RS-232 serial interface.

What serial parameters are required for USB configuration?

Set the USB serial port to 57600 baud, 8 data bits, 1 stop bit, and no parity; this configuration is recommended for the ZWD-35A.