The main equipment for emergency broadcast at the scene of a fire or accident can inform the on-site personnel of the accident and effectively direct or guide the evacuation of the site personnel; the external source signal can also be input through non-accident conditions (such as CD/MP3 player, tuner etc.) Perform background music broadcasts.
The display uses LED digital tubes and LED indicators. Used for indicator/play progress and various states. The buttons use a light touch button to switch between functions and the current status is indicated by an indicator.
• Built-in fire emergency broadcast source (cured voice) and two external auxiliary inputs (line I, line II), which can be switched freely through the panel. The broadcast source can also be forcibly switched to the emergency broadcast state by the external level trigger signal, and the signal is restored to the pre-switch state after the signal is cancelled. At the same time, the broadcast host also includes two mono output interfaces, which can output the current broadcast source to the GB9221 fire broadcast power amplifier.
• Configure a special microphone. The live broadcast can be performed in the emergency broadcast state, and the broadcast content will be automatically recorded for inquiry. In the non-emergency state, the live broadcast can also be performed. At this time, the recording will not be recorded, and other music signals will be automatically suppressed when the microphone is broadcast
• It adopts high-quality toroidal power transformer, which has low static power consumption and strong overload capability; it has perfect over-voltage, overload and over-temperature protection circuits, and alarms when faults occur; it has functions such as self-test, monitoring, and emergency broadcast volume preset.
• Ambient temperature: 0℃～+40℃
• Ambient humidity: <90RH (non-condensation)
• AC power supply: AC220±1015%, 50Hz±1
• Harmonic distortion coefficient: 80Hz～8kHz≤5%
• Output mode: 120V constant voltage
• Frequency characteristics: 80Hz～8kHz
• Rated output power: 150W/300W/500W
• Signal to noise ratio: ≥70dB
• Input impedance: Balanced 600Ω
• Dimensions: length:482.6mm width:345mmheight:132.5mm(3U)
