This radio modem module provides RS232 or RS485 connections by radio. It is a low cost wireless alternative for linking data loggers and supervisory computers.
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
