Car Antenna Kit DC12V Electric Aerial Radio Automatic Antenna Booster Power Truck Vehicle Antenna Working voltage: DC12V Voltage range: DC10V-14V Working current: 0.7+/-0.2A Wiring (three) connection method: red line is connected to the positive pole of the power supply, black line is grounded with the ear, and the green line has two connections: one is the direct current positive pole, so the antenna rises and falls with the power supply on and off, and the other is connected. Control line so that the antenna can be controlled at any time. Stretch length: 750 (outside the length of the car) Voltage: 12VDC antenna mast, five sections, AM/FM with good performance, working current less than 0.5A, The noise is lower than 50DB, the service life is more than 50,000 times, and the top force is greater than 4KG. Waterproof, easy to install, optional with multiple mounting heads Built-in imported micro-relay, 3C-2V coaxial cable, the line length is determined by customers. Economical vehicle fully automatic antenna Five stainless steel antenna mast FM radio is good Low noise and good waterproof Easy to install External high quality Micro- relay, long service life 3C-2V coaxial cable, impedance 75 ohms Installation angle: 0-30 degrees colour:black Material:Plastic + metal size:Protective bottom plate: 305mm Cable length: 1400mm The antenna mast is 39 inches long Package Contents: 1 x Antenna Kit Only the above package content, other products are not included. Note: Light shooting 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.