ITEM NAME:SCT-013-000 Non-invasive AC Current Sensor Transformer B5Y2 SCT-013-000 Non-invasive AC Current Sensor Transformer B5Y2 Product Name : Non-invasive AC Current Sensor;Model : SCT-013-000;Core Material : Ferrite External Material : Plastic;Input Current : 0-100A;Output Mode : Current/33mA Opening Size : 13 x 13mm/ 0.5" x 0.5"(L*W);Output Plug : 3.5mm;Dielectric Strength : "Verdana">6000V AC/1min Weight : 63g; Non-invasive current transformer, use this sensor clip to build your own Personal Energy Monitor. Package Content : 1 x Non-invasive AC Current Sensor Note:Light shooting 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.