1. 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, easytooperate, fast, safe and reliable. 

2. Adopts Permalloy core and CT double-layer shielding technology, with high performance and high accuracy, high anti-interference ability, suitable for complex interference environment. 

3. Battery jar could put in 4pcs 1.5V AAA alkaline dry cell and supply power for secondary development. 

4. Insulating rod interface: M24 screw thread. 

5. Insulating strength: AC3700V/ms ( between the core and coil)

6. Safety class: CATⅢ600V （operate with insulation rod below 60kV)

7. Working temperature: -15°C~50°C