HOBO state logger vs. motor/on off

Can I monitor mechanical equipment operation (pump) using the internal reed switch with the UX90-001 or do I need the UX90-004? Thanks!
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The reed switch on a UX90-001 is designed to open and close with a magnet, so by itself you cannot use it to determine motor on off. You can use the UX90-001 with an external sensor,such as a CSV-A8 AC Current Switch Sensor to capture the motor operation. see: www.onsetcomp.com/products/sensors/csv-a8. I'm curious if other Forum readers have found other external sensors for the UX90-001...hoping for some more replies for you. Good luck!

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