Features MATERIAL DURABILITY: Made of excellent materials, with good corrosion resistance and non interference performance STABLE PCB: Standing wave detection module adopt excellent PCB material, come with high stability and high reliability, you can use with confidence TECHNICAL PARAMETERS: The output load is 5K under optimal linearity, and the rated transformer coupling coefficient of 1.8 to 54MHZ bidirectional detector is 30db HIGH ACCURACY AND SENSITIVITY: Possess high accuracy and sensitivity, so that the operation is more accurate and safe FOR DIY: Support original DIY, more understanding of product functional structure, therefore achieve the best using performance Specification: Item Type: Standing Wave Detection Module Material: PCB Recognition Attenuator Value: The FWD-27 DB is 1kw The full size speed 17db is 100W The full size signal output is 750mv Output Load: 5K(optimal linearity) 1.8 To 54MHZ Bidirectional Detector Rated Transformer Coupling Coefficient: 30db Package List: 1 x Module 3 x Line 2 x Accessories Package List 1 x Module 3 x Line 2 x Accessories