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If it is an open circuit, neither of LED light will not light. The indicator light is a considerate working guide to facilitate the smooth operation of detection. When overloaded, built-in internal short circuit will automatically trip to ensure the safety of users and prolong the service life of the tester.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.