The SDS-122 is a two-way data switch that allows two modem devices to be connected to one datalogger. For example, this allows you to toggle between retrieving data from the datalogger locally (e.g., with a laptop computer) while the datalogger is also connected to a telephone modem. The SDS-122 is controlled by a datalogger control port or logic signals. The SDS-122 can support both DTE and DCE devices without the need for a null modem cable, and can operate in either automatic or manual mode.
