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High Speed
Industrial Radio Modem
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dataTaker 905U-D
The 905U-D radio modem module provides RS232 or RS485 connections by radio.
It is a low cost wireless alternative for linking data loggers and supervisory computers.
The 905U-D has been designed to be easy to use and simple to install. It uses a part of the
radio spectrum which does not require a radio license in most countries.
The module is fully integrated with radio, power supply, serial ports and microprocessor controller
housed in a strong industrial aluminium case.
» Features
• Radio data rate up to 115 200 bits/sec
• RS232 and RS485
• License-free frequency
• Single hop distance to 20+ miles US model (5Km European model)
• Repeater function for longer distance, unlimited repeater hops
• Forward error correction, CRC error checking with ARQ
• Turn-around time 5 msec
• Radio signal strength and BER indication
• Configurable on-line by Hayes AT commands or
Windows configuration software
• Transparent broadcast mode, peer to peer
• Addressed mode, multipoint and point-to-point
• Fast point-to-point mode
• Low power mode with DTR control
• On-line "dial-up" control using AT commands
• Repeater funtionality in all units
• Repeater routing via address selection
• Security against cross-talk between systems
» Download
Specifications of the dataTaker Radio
 Download (64kB pdf)
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