High accuracy: Mutual inductance current monitoring has high current detection accuracy and safe isolation of input and output. Self-powered: there is no external power supply required. Easy to install: There is no need to connect DC into the circuit when measuring. Current introduction: Measured current AC 0-10/20/50A, output signal DC 0-10V. Straight-through structure design: The isolation withstand voltage is up to 2000V. Material:plastic colour:Black Package Contents: 1 x AC Current Transmitter Only the above package content, other products are not included. Note: Light 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.