Radio Telemetry I/O Expander : 2 to 8 I/O points, RS-485 Interface to Radio

Model DIN-IOS (-1, -2, -3, -4, -5 versions)

The Radio Telemetry I/O Expander can be used to build out industrial I/O points (precision 4-20 mA, Discrete, Relay) across a facility or region linked by Synetcom's license free Serial SCADA Radio Modem product or a licensed radio telemetry modem.  One radio is required per site and connects to site Expanders using the radio's multi-drop RS-485 bus. 

I/O Expander modules are available with several standard I/O types and counts.  They are matched to other I/O expanders located anywhere in the system with a simple DIP switch address setting.  No other configuration is needed.

This approach lets you start with a small system and add additional I/O points and remote sites without disrupting system operation.

An adapter option allows the Radio Telemetry I/O Expander to be used with RS-232 radios.