905U-D

The 905U-D radio modem module provides RS232 or RS485 connections by radio.  It can be used instead of serial cable to link PLCs, data loggers, supervisory computers and intelligent transducers.  The 905U-D has been designed to be easy to use and simple to install and uses a frequency hopping 900MHz spread spectrum radio which usually does not require a radio licence.  The module is fully integrated with radio, power supply, serial ports and microprocessor controller housed in a strong industrial aluminium case and includes a radio transceiver allowing communications in both directions so the modules can check and control the transfer of information. 

The 905U-D can operate in transparent mode where the host devices provide error checking and communications control.  For less intelligent devices the 905U-D can provide addressing, error checking and control of communications and can accept Hayes compatible commands for selective addressing.  Host devices can connect to the 905U-D via RS232 or RS485 serial ports at data rates of up to 115.2Kb.  The 905U-D has an internal buffer of 2Kbytes and the radio can transmit data packages of up to 530 bytes at speeds configurable up to 115,200 bits/sec.  The 905U-D operates in the 902-928 MHz spread spectrum band.

905U-D Brochure (144.59 KB)

Configuration Software