Sensors may detect stray voltage in a manhole cover on a street and an inspector has to hotfoot past traffic to apply a voltmeter.

Several lawmakers said that Con Ed's efforts to detect stray voltage, while laudable, were inadequate.

For instance, an alarm could sound if the SCADA system detects voltage on a line where a failure is known to be in progress.

A non-contact tester which senses electric fields cannot detect voltage inside shielded or armored cables (a fundamental limitation due to the Faraday Cage effect).

Distance (Impedance Relay)- Distance protection detects both voltage and current.

The measurement is carried out by placing an instrument to detect voltage or current in the central branch.

We detected stray voltage.

When someone plugs in a device, the hub detects voltage on either D+ or D- and signals the insertion to the host via this interrupt endpoint.