Fluke Corporation, of Everett, Wash.

The testers can fail to give an indication of live voltage, resulting in the operator falsely believing the electrical power is off, posing a risk of serious injury or death from electrical shock or thermal burns.

The leads, which are used to connect probes to handheld digital multimeters when testing for the presence and amount of voltage present in electrical circuitry, can result in incorrect multimeter readings. This poses a serious shock or electrocution hazard, if the consumer touches live wires that the meter has read as having no electrical current.