description klein multimeter trms auto 600v temp klein tools mm420 multimeter is an auto-ranging, true root mean square (trms) multimeter that measures ac/dc voltage, ac/dc current, and resistance. it can also measure temperature, capacitance, frequency, duty-cycle, and test diodes and continuity. klein tools test and measurement product line was exclusively designed from the ground up by electricians for electricians. years of field research, combined with extensive input from electricians across america, inspired the development of meters and electrical testers loaded with innovative, time-saving features. california proposition 65 warning. view warning label features multimeter with automatic ranging true root mean square (trms) technology for increased accuracy measures up to 600v ac/dc voltage, 10a ac/dc current and 50 mohms resistance, continuity, temperature, capacitance, frequency, duty-cycle, and test diodes lead alert protection with led illumination for lead placement and an easy-to-view backlit display low battery indicator and easily accessible battery and fuse compartment durable meter built to withstand a 6.6-foot (2 m) drop includes test leads, thermocouple with adapter, batteries and user manual cat iii 600v safety rating for use in basic and controlled electromagnetic environments such as residential, business and light-industrial locations specifications acme tools brand name klein tools acme tools part number mm420 assembled weight (lbs) 0.91 battery type aaa california proposition 65 warning required yes case included no color / finish orange/black country of origin china depth (in) 1.78 digital / analog digital duty cycle capable yes internal supplier part # mm420 length (in) 6 manufacturer warranty please refer to attached warranty document. material abs, electrical components operating temperature range -40° to 1832°f (-40° to 1000°c) package depth 9.38 in package height 3.75 in package weight 1 resistance capable yes temperature range -40° to 1832°f (-40° to 1000°c) upc 092644693748 weight (lbs) 0.5125 weight (oz) 8.2 width (in) 3.16