The IDEAL 61-747 Tight Sight clamp meter is a CAT III 600-Volt rated auto ranging true root mean square (TRMS) digital clamp meter that measures up to 400 Amp AC and DC current via the clamp head. It measures up to 600-Volt AC and DC, frequency, resistance, continuity, capacitance, and diodes via test-leads (included) and measures temperature (F/C) via a K-Type thermocouple (included). It's capable of detecting the presence of voltage between 40-Volt to 600-Volt via a non-contact sensor in the right tip of the clamp. The patented Tight Sight LCD display, located on the bottom of the unit, enhances safety and productivity by displaying a secondary reading at the end of the meter, eliminating the need to bend or twist conductors or place you head near the panel in order to see the main meter display. Both displays can be backlit, and a built-in flashlight can be illuminated when working in poor or zero lighting conditions. The unit uses an illuminated red LED in the center of the meter and emits audible tones to notify when voltage is above 30-Volt, when continuity is detected and when the NCV senses voltage within its set range. The clamp head has a built-in probe tip holder on the backside of the right clamp to allow measurements holding the clamp in 1 hand and the second lead in the other hand. The meter comes with 3 1.5-Volt AAA batteries and an easy open, fully accessible storage pouch with a belt loop that allows for meter, probe and thermocouple storage.