Feature:1. With 25DB gain, you can get more channels, improve frequency clarity, and expand the receiving range.2. The number of channels received is determined by the broadcast content in your area.3. Channel reception is related to broadcasting tower, terrain, environment and weather.4. If your TV image is not clear, or you cannot receive weak signals from a distant transmission tower, use this amplifier to boost the weakened signal.5. Suitable for antennas without amplified appliances, if the signal is already very strong, you need not to use it.Specification:Item Type: Signal AmplifierMaterial: ABSColor: As Picture ShownWeight: Approx. 43.0g/1.5ozFrequency: 45-862 MHzGain: 25dbPower Supply: 5V 1A (Self Equipped)Noise Parent: Less than 4dB.Package List:1 x Antenna1 x IEC Adapter