The Sperry Instruments DSA600TRMS True RMS Clamp Meter has more features and functions without the extra cost. This clamp meter offers a large range of superior functions like advanced temperature measurements and peak hold. The meter gives True RMS readings and measures current without having to contact live conductors. This unit features a data-hold switch to maintain the reading on the 5999 count backlit screen and auto power-off functionality to extend battery life. The built in low battery indicator will ensure you won't get incorrect readings due to low batteries. Audible beeper offers easy continuity check (Buzzer Sounds at 100 Ohms or less). We consider safety first; this instrument has been designed and tested according to cETLus standards and is CAT 3 600V rated. This compact, lightweight, yet durable unit has a crush rating of 250 lbs and a 10 foot drop rating – the best in the industry.