·  Reverse protection.
·  9-32V wide voltage range.
·  Highest output power reaches 400Watts.
·  Compatible speakers with different impedances.
·  More than 10 kinds of tones could be produced with dual channel speakers.
·  With the latest digital amplifier, high efficiency, low distortion, low noise, wide dynamic range.
·  Could be connected with wired or wireless control handle, and also with police vehicle control platform, to make various of control methods.
·  4,6,8,11Ω loudspeakers are adopted.
·  With monitoring function, drivers are able to hear the slight sounds from outside of car, without opening the window.
·  Include common police alarm, mixed alarm etc. 10 kinds of tones ,could be broadcasted by dual channel loudspeakers ,tones are also customizable.
·  The volume of warning, microphone, monitoring, radio etc. can be adjusted independently.
·  The voice of microphone and sensitivity of monitoring can be adjusted by remote independently.
·  Starting up with Car ACC ignition.
·  Siren works when pressing "Horn" button, standby mode starts when parking.
·  External audio input function is allowed, such as radio.
·  Show buzzer running status.
·  Provide fault codes instruction.
·  Two light control channels.
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                                       Siren amplifier technical specifications | |||
| input voltage | 10-30V | ||
| maximum operating current | 34Amps @11.8VDC (150W*2 Speaker) | ||
| operating current | @13.6VDC  11Ω100W*2 Speaker | 17.8 Amps  | |
| @13.6VDC   8Ω150W*2 Speaker | 22.7 Amps   | ||
| @13.6VDC   6Ω150W*2 Speaker | 28 Amps       | ||
| @27.2VDC   4Ω200W*2 Speaker | 15.7 Amps     | ||
| output power&power amplifier efficiency | 100W*2 @13.6VDC ; 11Ω   | 85%    AC33.5V  | |
| 125W*2 @13.6VDC ; 8 Ω | 84%    AC31.7V | ||
| 150W*2 @13.6VDC ; 6 Ω | 82%    AC 30V | ||
| 200W*2 @27.2VDC ; 4 Ω | 95%    AC28.4V  | ||
| Standby current | engine on | @13.6V | ≤180mA |
| @27.2V | ≤130mA | ||
| engine off | 0mA | ||
| output frequency | audio frequency | 200Hz~10KHz  | |
| police tone | 675Hz~1633Hz | ||
| yelp | 400Hz~4000Hz | ||
| air horn | 450Hz~1500Hz | ||
| monitor | 400Hz~4000Hz | ||
| overvoltage protection | ≥30V Sound and light hint< span>,≥32V Close amplifier | ||
| battery over discharge protection | ≤10V Sound and light hint< span>,≤8V Close amplifier | ||
| operating temperature | -40ºC~65ºC | ||
| weight | 1.869kg | ||
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