This signal conditioning line utilizes spread spectrum frequency hopping techniques to guarantee a license-free, interference-free link between remote devices and the control room. Costly cable and conduit runs on new projects, or retrofitting of existing systems are eliminated and replaced with a maintenance free wireless solution. The modules are available as a transmitter/receiver pair and come factory programmed, calibrated and tested as a set, capable of carrying one 4-20mA current loop and two digital status signals. Typical in-plant range is 200 – 300 m with no line-of-sight, much farther with outdoor applications. The transmitter and receiver are powered separately.