CS3 Four Terminal Current Sense Resistors Ohmite CS3 Wire Element Four Terminal Precision Current Sense Resistors utilize state of the art technology to achieve highly reliable non-inductive performance. The CS3 Series is ideal for current monitoring and control applications. The Ohmite CS3 Wire Element Four Terminal Precision Current Sense Resistors feature values beginning at 1mΩ and a four-terminal kelvin connection.