This test board features a plug-in test circuit suitable for the VNWA Testboard, along with a set of 0805 and 1206 patch test circuits. It's compatible with NanoVNA, NanoVNA-H, NanoVNA-H4, and NanoVNA-F series vector network analyzers, offering user-friendly measurement plug-ins and devices. This DIY kit boasts stable performance, high accuracy, and high sensitivity, crafted from quality materials for a long lifespan. Please note: As the circuit may not fully account for all testing situations, some tests might require modification. Ensure you have adequate practical skills before use. Material: plastic, Color: blue. Package Contents: 1 * Test Board Mainboard, 6 * SMA Female Heads, 4 * 6mm Copper Standoffs, 4 * M2.5 Screws, 2 * 40pin Round Headers, 2 * 0805 49R9 Calibration Resistors. Only the above package contents are included; other products are not. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3cm.