The X-Tractor Series sampler elements from Coaxial Dynamics are Directional or Non-Directional couplers that replace the standard element in your wattmeter for such applications as RF signal observation, spectrum analysis or frequency counting and control where main line power does not exceed 10,000W on Non-Directional or 1000W on Directional X-Tractors. CDI elements come with a 2 Year limited Warranty. Learn More