Risk of electric shock from other sources.
Klein Tools state that a fastener:
"can work itself loose over time, potentially leading to a false reading when measuring voltage. This issue could indicate a reading of zero voltage on energized systems resulting in the operator falsely believing the electrical power is off, posing shock, electrocution and burn hazards."
Klein Tools CL110, CL210 and CL310 and CL110KIT Digital Clamp Meters
Date codes of affected products:
Klein Tools CL110, CL210 and CL310 and CL110KIT clamp meters - see images for details