Voltage detectors are essential tools used to identify the presence of electrical voltage in a circuit or equipment, ensuring safety before handling or working on electrical systems. These devices come in various forms, including pen-style testers, clamp meters, and handheld devices, and are designed to detect AC or DC voltage. Detectors help workers avoid electrical shocks by confirming whether a circuit is live or de-energized. Regular use of voltage detectors in industrial, commercial, and residential settings is critical for preventing accidents and maintaining a safe working environment.