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| The Regard 4-20 mA Input Card is part of a state-of-the-art microprocessor-driven gas monitoring system. |
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| The Regard 4-20 mA Input Card is the basic module in the system. One Polytron transmitter can be connected to each 4-20 mA Input Card. The actual gas concentration is displayed and, with its built in relays, alarm devices can be switched. |
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