The Dual Range Voltage Detector is designed to help electrician, HVAC technician or facilities maintenance technicians. This non-contact detector with a measuring range of 10 to 1000 volts performs three functions namely lighting up, detecting and differentiating. High sensitivity if the detector detects up to 10 to 49 volts in common devices that goes unnoticed in standard voltage detector such as LED lightings, HVAC controls and security controls. The LED indicators and the audible tones distinguishes the voltage range from 10 to 47 Volts to 50 to 1000 Volts. LED work light gives great visibility in dark areas. It switches off automatically after 5 minutes of non-use for longer life. Blade tip helps in identifying the outlets of checking voltage ranges. Pocket clip ensures easy storage.