![background image](http://html1.mh-extra.com/html/campbell/crs451/crs451_product-manual_3790824030.webp)
8.3 Battery replacement
A video that describes CRS451/CRS456 battery replacement is available at:
www.campbellsci.com/videos/crs451crs456-sensors-battery-replacement
. Remove the set screws
on the cap end of the CRS451/CRS456.
CRS451/CRS456 Submersible Water-Level Recording Sensor
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