The SHMD400K E-, B– and H-field sensor head consists of three different sensors combined into one: an electric sensor (E-field), a magnetic induction sensor (B-field) and a magneto-static sensor (H-field). Each sensor within the probe is composed of three mutually orthogonal sensitive elements.","The operator can select the desired sensor type using a switch located at the base of the sensor head. The SHMD400K sensor head is not available separately, but is only offered in conjunction with the purchase of an SM400K Safety Meter. See the SM400K Safety Meter specification sheet for details.","IMPORTANT NOTE: The SHMD400K can only be sold in conjunction with the purchase of a SM400K Safety Meter