• Antenna TV Professional: This indicates that the amplifier is intended for use with antenna TV signals, often including over-the-air broadcasts.
• Power Amplifiers: This suggests that the amplifier is designed to amplify the power of signals, which can help boost the signal strength for distribution.
• Digital Signal System: This implies that the amplifier is designed to work with digital TV signals, commonly used for high-definition television.
• Outdoor Case: The inclusion of “outdoor case” specifies that the amplifier is designed for outdoor use, which typically means it is weatherproof or protected against environmental elements.
• CATV Amplifier Power: This signifies that the device is not only a CATV (Cable TV) signal amplifier but also includes power amplification capabilities.

Power amplifiers are used to increase the strength of signals, allowing them to be distributed over longer distances or to multiple endpoints while maintaining signal quality. In outdoor settings, such as commercial installations or areas where outdoor TV distribution is required, outdoor cases are essential to protect the amplifier and its components from environmental conditions.