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Bosch Building Technologies

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    How to determine how long the loop wiring can be or how many devices can be connected to a D9127.

    • The loop wiring connected to the D9127 popit must be within 100 ohms of the 33K End Of Line resistor.  Therefore provided the total resistance created by loop wiring and connected devices must be less than 100 ohms to prevent an unstable point or possible false alarm.
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    Last update:
    ‎06-19-2018 02:46 PM
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