Uei dl479 ac 600atrue rms clamp meter the uei dl479 true rms clamp meter has everything you would expect from a professional grade clamp meter at a fraction of the price. This trms meter can be used to measure ac/dc current and voltage, resistance, capacitance, continuity, diode test, frequency/duty cycle, and temperature. All of that functionality comes in a durable housing that features a built-in work light, easy-to-read backlit display, overmolded grip, and test lead storage. this kit includes the dl479 clamp meter, test leads with alligator clips, thermocouple temperature probe, carrying case and 2xaaa batteries.