Introduction: What is CT sensors CTs are sensing devices used to measure alternating current. They are especially beneficial when assessing an entire building's electrical utilization (or production). Split core types, such as the CT depicted, are ideal for DIY applications, as they can be quickly and safely clipped onto either the live or neutral wire entering the building without the need for any high voltage electrical repairs. Features: Applications Suitable for the current measuring Monitoring and protection of AC motor Lighting equipment Air compressor Specification: Open Size: 13mm x 13mm Leading Wire in Length: 1m Dielectric Strength(between shell and output): 1000V AC/1min 5mA Work Temperature: -25°C ~ ﹢70°C Resistance Grade: Grade B Build-in sampling resistance(RL): 186Ω Non-linearity: ±3% Output Mode: 0~1V Input Current: 0~10A AC Fire resistance property: in accordance with UL94-VO SCT-013 Series CT Senors - Introduction CT Sensors - Interfacing with an Arduino CT Sensors - How to build an arduino energy monitor