This test board includes a plug-in test circuit compatible with VNWA Testboard, featuring additional 0805 and 1206 test circuits. Compatible Model: Designed for use with NanoVNA, NanoVNA-H, NanoVNA-H4, and NanoVNA-F series vector network analyzers for convenient measurement setup. DIY kit with stable performance, high accuracy, and high sensitivity. Constructed from high-quality materials for durability and long service life. Note: The circuit design may not cover all testing scenarios; some manual adjustments or modifications may be required. Ensure you have adequate hands-on skills. Material: Plastic Color: Blue Package Contents: 1 x Testboard Main Board 6 x SMA Female Connector 4 x 6mm Copper Stud 4 x M2.5 Screw 2 x 40-pin Round Header 2 x 0805 49.9 Ohm Calibration Resistor The package includes only the items listed above; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual product. Measurement error allowance is +/- 1-3 cm.