1、High Efficiency: The clamp meter can only measure AC current (no DC current), AC and DC voltages, resistance, capacitance, continuity, diodes and frequency (Hz), band, neutral line. A digital clamp meter is the perfect ammeter troubleshooting tool, you can accurately troubleshoot vehicle or internal electrical problems in a very short time and get the job done more efficiently. 2、Double Opening Jaw: The maximum wire diameter that the clamp meter can measure without interrupting the circuit is 1.42inch. Double opening jaws to suit your operating habits. 3、Non Contact: The clamp meter makes it easy to quickly determine the existence of voltage. A short press on the NCV button in any gear switches the NCV non contact AC voltage detection function. 4、Stylish and Durable: The clamp meter can handle the demands of long hours of work, from the durable exterior to the extensive heavy duty features. Stylish and durable, which prevents any damage or scratches caused by accidental bumps or drops, ensuring the device is in fine condition when travelling or outdoors. 5、Wide Application: This clamp meter is used to measure AC currents and is widely used in laboratories, factories and homes. Item Type: Clamp Meter Material: ABS Batteries: 2 x AAA batteries (not included) AC Voltage Range: 4V-600V DC Voltage range: 400mV-600V Resistance Range: 400Ω-40MΩ AC Current range: 40A-400A Frequency Range: 10Hz-400kHz, 400kHz-4MHz Capacitance Range: 1nF-4uF, 4uF-400uF, 4mF Temperature Measurement Range: 0℃-750℃ (32℉-1382℉) 1 x Clamp Meter 1 x Black Test Pen 1 x Red Test Pen 1 x Instruction Manual 1 x Storage Bag