Split core current transformer are sensors that are used for measuring alternating current. They are particularly useful for measuring whole building electricity consumption (or generation for that matter). This Split core current transformer is particularly suitable for DIY use it can be clipped straight on to either the live or neutral wire coming into the building without having to do any high voltage electrical work. Applicable for current measurement, monitoring, and protection of the following devices: AC motor Air compressor Lighting equipment Specification:Input Current: 0~30A ACOutput Voltage: 0~1V Work Frequency: 50 ~ 1KHz Secondary Coil: 1800 - 2T Accuracy: -1% Non-linearity: - 3%Build-in sampling resistance（RL): 62Ω¸Resistance Grade: Grade BWork Temperature: -13F~ 158F (-25C ~ 70C) Safety indicators:Dielectric Strength(between shell and output): 1000V AC/1min 5mA.Fire resistance property: In accordance with UL94-VO. Leading Wire in Length: 1mOpen Size: 13mm x 13mm Packing List:30A Split Core Current Transformer x1 Product Dimensions 2.2 x 1.2 x 0.8 inches Item Weight 2.24 ounces Manufacturer ZIYUN ASIN B01FBMFZCO