Overview
This document is used to guide customer installing and operating InDTU300 Series Industrial GPRS Data Terminal
Unit which researched and developed by InHand Networks. Please make sure the product model and the accessories in the
packaging (like power supply, antenna) before using. If you need buy SIM card, please consult the local operators.
Panel Layout
There are two serials ports in InDTU300, COM 1 is for data communications and COM 2 is for configuration. We use
COM 2 to configure InDTU300
.
Typical application
InDTU300 series can be used to connect your serial device (RS232/485) to internet via GPRS network.
GND
COM 1
Data transmission
only
9600 / 8 / none / 1,
Allow you to change
the parameters
TXD/485-
RXD/485+
TXD2
COM2
Configuration only
15200 / 8 / none / 1,
parameters can be
changed
RXD2
GND
V-
Power supply
V+
