This Clamp Meter measures current without having to contact live conductors.The DSA540A is a 10 function, 26 range auto-ranging snap-around clamp meter engineered to measure up to 400A AC/DC current, 600V AC/DC voltage, 40 Mohm resistance, frequency, capacitance, diode test and continuity.Similar to digital multimeters, clamp meters offer a large range of functions and include LCD screens to display results. They offer the additional unique ability to measure current without having to contact live conductors.Key FeaturesAudible beeper permits easy continuity checkThis instrument has been designed and tested and certified to cETLus with CAT II t 600 V and CAT III 300V ratingsData hold and relative measurement capability to maintain reading on displayAuto power off functionality to save battery lifeCompact lightweight design to fit into any tool belt or small areaIncludes convenient carrying case to protect the meter and keep it cleanAudible alert and bright LED visual indication for easy identificationRange Setting: AutoDisplay Type: DigitalDC Voltage: 600VAC Voltage: 600VDC Current: 400AAC Current: 400AResistance: 4000-400MΩBatteries: 2 AAA (sold separately)Length: 7 3/16"Width: 1 11/16"Depth: 1 1/8"Warranty: Limited lifetime