The SCS CTC1136FT ESD Remote Antenna for Model CTM048-21, 6 ft. Cable is a remote ESD sensor for the Model CTM048-21 EM EYE - ESD Event Meter. The remote antenna measures ESD events that cannot be physically reached by the EM Eye Meter’s local antenna. The included 6 ft. cord allows the antenna to be mounted in hard-to-reach places.