1、100% brand new and high-quality. 2、The measuring range is 0-500A which is suitable for most scenarios. 3、High accuracy,the resolution ratio is as precise as 1mA and the accuracy grade is ±2.0%FS. 4、High sensitivity and few interference was generated if outer electric field is near. 5、High dielectric strength,more safety and let you rest assured. Features: It is small.light weight,portable and easy to use. It is incisive,highly stable and has strong anti-interference ability. It is suitable for electric,communication,meteorological,industrial and mining fields and etc. It is particularily suitable for measuring harmonic wave,phase position,power rate. It can connect various incisive digital multi function meter or data record. We adopts CT technology makes it nearly not influenced by magnetic fields. Specification: Detection mode clamp CT Measurement 0~500A The discrimination rate 1mA Accuracy level ± 2.0% FS (50Hz/ 60Hz;23 ℃ ± 2 ℃, under 70% RH, the conductor is in the center of the clamp mouth) The turn ratio 1:4000 Phase error less than 2 ° (50Hz/ 60Hz);23 ℃ ± 2 ℃) Reference load RL:0 ~ 300 mA ≤ 500 omega;0 ~ 3A ≤ 50Ω;0 ~ 30A ≤ 5omega;0 ~ 300A ≤ 0.5 Output mode current induction output Output interface 3.5mm audio plug Output line length 2 m The electric field interference about 10mA when the external electric field 100A is close to 10mm The position of the conductor at the center of the clamp Frequency 45 Hz ~ 60 Hz (when testing high current) Frequency characteristic 10Hz ~ 100kHz Line voltage AC 600 V below line test Dimensions 122 mm in length,70 mm in width,33 mm in thickness Working temperature and humidity -20 ℃ ~ 50 ℃;Under 80% rh Storage temperature and humidity -10 ℃ ~ 60 ℃;Under 70% rh Insulation strength AC 3700 V/ rms (between core and shell) Package List: 1*Main Unit 1*Users Manual Note: 1. As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2. Please allow 1-3mm differs due to manual measurement.