Watch out, there's AI about

[PlainName]

Q: Does a non-contact DC voltage sensor exist?

A:

Yes, non-contact DC voltage sensors do exist. These sensors are also known as non-contact DC voltage detectors or non-contact DC voltage testers.

Non-contact DC voltage sensors work by detecting the electromagnetic field produced by a DC voltage. The sensor can detect the voltage without making direct contact with the electrical conductor or circuit.

There are several types of non-contact DC voltage sensors available, including capacitive sensors, magnetic sensors, and electrostatic field sensors. These sensors can be used for a variety of applications, such as detecting the presence of live electrical circuits, checking batteries and power supplies, and troubleshooting electronic devices.

It is important to note that non-contact voltage sensors should not be relied upon as the sole means of determining the presence or absence of voltage. They are intended to be used as a supplement to other voltage testing methods, such as a multimeter or a voltage detector with contact probes.

Answer includes a nice photo of a suggested tool: a Meco 27 Auto. Operating manual attached in case you weren't convinced.

[magic]

LOL

But you could actually detect DC electric field with respect to earth, if you have earth connection available.

[DmitryL]

Q: Does a non-contact DC voltage sensor exist?

I'm not an AI, but it seems that it does, at least, I have one
It has a nicely looking mechanical chopper with rotating fins.