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  1. #1
    Join Date
    Jan 2003

    recording/trending/logging dry-contacts

    Looking for a cheap way to have a historical record of when a unit starts and stops. I'm thinking someone probally have an idea for a home-made one. Maybe involving a time clock and a current sensor/relay.

  2. #2
    Join Date
    Mar 2004
    Austin, Texas
    I've been using the HOBO motor on/off data loggers for this. They work well and record the time to the second. I think the loggers are about $80 each but you will also have to buy software & cable if you don't have them. I think there is a cheaper software package (not Pro version) but I don't know anything about it.

  3. #3
    Join Date
    Mar 2005
    I concur, the HOBO (despite its name) is a great product and very effective.

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