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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.