Small and practical: The magnetic field antenna is small in size, in structure, good stability, easy to install and easy to use, and is a practical accessory. Heat dissipation: The PCB near-field antenna has a heat dissipation surface and has a service life and lifespan. So we believe that you will feel confident with the product due to stable functionality. Easy to use: The electric field antenna is for finding interference sources, with high precision, high resolution and easy to use. With high performance, the electric field antenna is definitely yours. PCB near-field antenna with good current flow. Frequency range: 0.1mhz-6000MHz Interface: SMA outer screw inner hole size: 110x12.5MM Material: PCB color: black green Package contents: 1 * Small probe Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.