ANTOP Smartpass Amplifier TV Signal Amplifier with High Gain & Low Noise & Built-in 4G LTE Filter,3ft and 0.3ft Coaxial Cables, USB Power Adapter and 5ft USB Cable, Black Color, Pack of 1 Unit Perfect March for Antenna: Works with any non-amplified/passive TV antenna. It would help to enhanced the tv station received. Built-in 4G Filter: This booster built-in 4G filter in it to block 3G and 4G wireless signals to ensure NOISE-FREE digital TV reception. Smartpass Amplifier: Function allows an easier connection between a non-amplified/passive antenna and your TV delivering the correct balance between short and long range reception. Easy Set Up: 3ft and 0.3ft extension coaxial cable are attached at either end for easy connection. Unit can be powered via the included USB cable by connecting to any USB power adapter supporting 5V output on USB-port. Security Certification: CE, UL and RoHS approved, we offer a 12-month warranty and 30-day money back guarantee to our customer.