Chonghan CH-D3 Series, User Manual

Page: 9 / 18

CAI JINYONG
2018-3-30
CHONGHAN CH-D3 WIRELESS DTU USER MANUAL
页
9
Note: the AT+I command not case-sensitive, prefix by at+i and terminate
by <cr>.
2. Introduction
With the development of wireless communication technologies, wireless products are being
adopted in numerous industrial and civilian fields. Shenzhen Chonghan Co., Ltd. a leader of wireless
communication equipment manufacturer releases the CH-D3 Series Wireless DTU, which support
various frequency bands of GPRS/CDMA2000 1X/LTE, and provide industrial terminal solutions for
2.5G communication. As a wireless DTU, it support AT+I command set via RS-232/RS-485/TTL
interface.
CH-D3 series wireless DTU adopts industrial level modules, specially designed for the
complicated industrial environment which compatible with EMC, and will be your best choose of
wireless communication.
2.1. Features

Data transparent transmit

Always online

Trigger up online

Remote reboot

AT+I command interface

Support GPRS / CDMA2000 1X/LTE

Support APN or VPDN

LED: power, ring, data

Interface level: RS232 / RS485 / TTL

Watchdog(software and hardware)

Industrial design for small dimension

Robust industrial housing, Steel shell for anti-electromagnetic interference

DC5~48V wild rang, lower-power
2.2. Application

Remote Data Monitor and Control

Water, gas and oil flow metering

AMR (automatic meter reading)

Power station monitoring and control

Remote POS (point of sale) terminals

Traffic signals monitor and control

Fleet management

Power distribution network supervision

Central heating system supervision