Chauvin Arnoux E27 [P01120027] Current Clamps, 100 mA - 100 A A/DC. The E27 clamp is designed to measure alternating and direct currents by means of Hall-effect technology. Its long, narrow shape makes it ideal for measurements in cable strands or confined spaces such as switchboard wiring, motor control units or power supplies or the electrical circuits of automotive vehicles. Via a coaxial cable terminated by an isolated BNC plug, this clamp outputs a signal in mV which is an image of the current measured in terms of waveform and amplitude. The E27 clamp is equipped with an automatic DC Zero system and a deactivatable Auto Power Off (APO) function and can be powered by a standard mains power pack via a micro-USB connector. This clamp offers 2 different sensitivities and a large bandwidth. It is particularly appreciated for measuring and viewing complex AC+DC signals on an oscilloscope.