ETCR 040HA High Voltage Clamp Leakage Current/Current Sensor detecting of AC leakage current/current, higher harmonic current, phase, electric energy, power, power factor etc. Unique automatic plug and pull clamp structure, no need to interrupt the power supply and disconnect the circuit in testing, easy to carry and especially suitable for on-site online testing. Non-contact measurement, easy to operate, fast, safe and reliable. Adopts Permalloy core and CT double-layer shielding technology, with high performance and high accuracy, high anti-interference ability, suitable for complex interference environment . Battery jar could put in 4pcs 1.5V AAA alkaline dry cell and supply power for secondary development. Insulating rod interface: M24 screw thread. The sensor can output current and voltage signals, and the measuring range, output signal and output interface of the transformer can be customized according to customer requirements.