Using high-quality electronic components, precision craftsmanship, durability and long service life. Superior multi-layer PCB design with large area cooling metal. Good contact performance to ensure stable work. The power supply range is DC9-15V, the typical value is 12V, and the maximum output power is greater than -15dBm. Built-in circuit protection ensures safer operation. Operating frequency range: 10KHz-30MHz Power supply range: DC9-15V, typical 12V Maximum output power: more than -15dBm Output interface: SMA female interface Colour: green Material: PCB Package Contents: 4 x Active Antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.