Computer Safe with Backlit LCD display for accurate voltage readouts. Small, ergonomic design for easy use in confined areas. For use on cars, boats, and all 3-48 volt systems. Features a long probe for use in confined spaces and a sharp stainless steel probe for easy wire piercing. Cable length is 11ft uncoiled. Voltage range: DC 3-48V. Current Draw: 3-20V / 17mA | 20-48V / 10mA. Suitable for checking positive and negative electrical charges.