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• Works with any passive TV antenna;• High-gain amplifies VHF & UHF signals with a low noise level, less than 2dB;• Dual-color indicator: green for long reception & yellow for short reception;• 3ft & .3ft extension coaxial cables attached at either end;• Must be powered to function through included USB cable ;• Engineered & designed in the USA;• Smart switch boost weaker signals when on & avoids overload for stronger signals when off;• All-in-one design allows an easier connection between passive antenna & TV to deliver correct balance between short & long range reception;• Blocks 3G & 4G wireless signals to ensure noise-free digital TV reception;• 24-hour access to online customer support & installation assistance from manufacturer;• Includes USB AC/DC power adapter, USB cable & instruction manual;• 1-year warranty ;• Black;