We are manufacturer, professional public address system 1, Emergenct 2, Fire. 3, 12-24V. 4,128Aux...more popular.... ModelCY-105Net weight7.5kgPowerAC220V~240V/50HzDimensions485*390*88mmWe are manufacturer, professional public address system1. Emergency 2.Fire.3.12-24V.4.128Aux. more popular.1.Support press light button by user.2.Within fire light notice!3.128Auxs fire jack.4.With short circuit. ...