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Connects two alternative modems to one device with serial interface RS232 (MSU).
Automatic switch at detecting of a modem carrying frequency. Possibility of switching on different types of modems - standard, GSM, radiomodem, etc. Data exchange speed: up to 125 Kbps. Low consumption, small dimensions. High level protection. Own supply block with external power supply 220 VAC. Building-in a panel or wall mounting.
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