UHF Multi Channel Radio Modem

The TDM2 is a very simple 433MHz
band radio data modem. It provides a
medium ranged half duplex,
transparent data link between a pair
of 9600 baud RS232 ports without any
additional interface circuitry.

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The TDM2 is a TDL2A radio module, combined with suitable interface circuits, power supplies and connectors, packaged in an attractive instrument case. In the simplest case, a pair of 'box modems' (with suitable aerials and power supplies connected, of course) can be connected directly to the serial ports of a pair of industrial PCs and the resulting wireless data link used without any further installation or programming.

Range of Features
�� RS232 driver and DB9F connector for direct interface to PC serial port
�� Serial modem baud rate at 9600bps (half-duplex)
�� Addressable point-to-point
�� 5 serial select wideband channels (in the 433.05 – 434.79MHz European band)
�� Access to internal diagnostic/Test modes using HyperTerminal
�� On board SMA antenna connector
�� Signal LED for visual indication of valid code received
�� Setup is simple as Plug-and-Play
�� Set-up and configuration using HyperTerminal
�� Conforms to EN 300 220-3 and EN 301 489-3
�� Size: 94 x 107 x 33mm (excluding connectors)

Applications
�� Handheld / portable terminals
�� PDAs, organisers & laptops
�� Industrial telemetry and telecommand
�� In-building environmental monitoring and control
�� Remote data acquisition system, data logging
�� Fleet management, vehicle data acquisition