PRECISE MEASURING - Micsoa autoranging clamp on meter with AC current(up to 400 amp), AC/DC voltage(up to 600V), resistance, temperature, diode and continuity test AUTO POWER OFF - Automatically enters sleep mode after 15 minutes of inactivity. To turn it on again, just rotate the range switch or press a button. Power-saving PORTABLE - Comes with a handy carrying pouch - Keep your digital clamp meter tidy and you can take it anywhere. Perfect for use while on the go FUNCTIONAL - Featues Data Hold, Max Reading of 1999 and an easy-to-read digit LCD VARIOUS USAGES - Can be used to troubleshoot electrical problems safely and accurately in a wide array of industrial and household devices such as electronic equipment, automotive, domestic appliances, power supplies, and wiring systems. 30 Day Money Back Guarantee