The 400W Early Warning System Electronic Siren Alarm Amplifier is designed to provide a powerful and reliable solution for alarm systems and public address needs. This high-quality Class D amplifier operates effectively on battery or solar power, ensuring versatility in various environments. The unit operates within a working voltage of DC20-30V, making it suitable for diverse applications.

Users will appreciate the rated output power of 400W, which allows for clear and loud alerts in critical situations. The amplifier features an automatic temperature-controlled air cooling system, enhancing its durability and efficiency. With a frequency response of ±2dB from 300 Hz to 8000 Hz, users can expect superior sound quality, which is crucial for emergency notifications.

• Working voltage: DC20-30V
  
• Input amplitude: sine wave (voice) 2VP-P, square wave (alarm) 1.4VP-P
  
• Input impedance: 600 Ω
  
• Rated output power: 400W
  
• Output AC/Input DC power efficiency: ≥ 80%
  
• Frequency response: ≤ ± 2dB (300 Hz -8000Hz)
  
• Harmonic distortion: ≤ 2% (300 Hz -8000 Hz)
  
• Load impedance: 4 Ω
  
• Audio input interface: 3.5mm audio socket
  
• Working temperature: -20 ℃~55 ℃
  
• Working humidity range: ≤ 95% RH
  
• Heat dissipation: automatic temperature-controlled air cooling

Marketed as a high-quality solution, this amplifier is designed to meet the demands of users in various settings. It offers an efficient and effective way to manage emergency alerts and public announcements, representing an ideal choice for users seeking reliable performance at competitive rates.