The EMX-AC-1209 is an aerial current transformer from EMAX. It is designed for measuring alternating currents in wires without contact and for isolating electrical circuits. It is used for measuring and monitoring applications, in particular for monitoring of alternating currents in power cables and lines. It features a low-weight, waterproof design and is available in various sizes and current ratings. The transformer also features an encapsulated coil to provide increased accuracy and protection from environmental hazards. It is also insensitive to humidity, heat, and dirt.