1.5m leading wire,Φ3.5 3 core plug standard output. Two form of output current, voltage (voltage output built-in the sampling resistor). Core material: ferrite Mechanical strength: opening and closing times, no less than 1000 times 20 C indicators: Dielectric strength 6000V AC/1min Meet UL94-V0 flame retardant properties Operating Temperature: -25Celsius~ +70Celsius Applications: for AC motors, lighting equipment, air compressors and other current measurement,monitoring and protection. Colour:blue+black Material:plastic type:100A 50mA Package Contents: 1 x Current Transformer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Opening size:13mmx13mm Retractable transformer -013 Model : SCT013 Frequency : 50HZ-150KHZ Non-linearity 3%(10%-120% rated input current)