... ModellayerFunctionLight PowerVoltageDecibelsColorPacking SizeQTYWeightLTA5051T Steady Burn 2WDC12VDC24VAC110VAC220V— red---W FlashTJ Steady+with buzzer85dBWJ flash + with buzzerLTA5052T ... Steady Burn 4WDC12VDC24V redAC110V greenAC220V— ---W FlashTJ Steady+with buzzer85dBWJ flash + with buzzerLTA5053T ... , C,Continual alarmLight Source,T,Steady burn, W,Flash LTA-505 Bulb signal tower