• Highfly: This could be the manufacturer’s brand or name.
• 4 Way: This indicates that the signal amplifier has four output ports, allowing you to distribute the amplified signal to four different devices or locations.
• CATV Signal Amplifier: This indicates that the device is specifically designed for amplifying CATV signals, which are used for cable television distribution.
• STA-104: This is likely the model number or identifier for this specific amplifier.
• Gain 20dB: This specifies the amplification gain provided by the amplifier, which is 20 decibels. Gain represents how much the input signal is boosted in strength.
• Household TV Amplifier: This suggests that the amplifier is designed for household or residential use and is intended to amplify TV signals for multiple TVs within a home.

The primary purpose of this device is to improve the quality and strength of CATV signals and then distribute them to multiple televisions or devices within a household. The 20dB gain ensures that the signal remains strong and clear for all connected devices.