The AW-CSS2166-4 is a conventional type sound and short light alarm. It is an automatic fire alarm system output devices, mainly through the alarm will sound and flash signal, suggesting that people fire.
By DC 24V electrical signal to the conventional type of sound and light alarms powered, it sounds an alarm buzzer and flashing lights flash issue.
In the event of a fire can be an effective warning sound and flash to notify people to evacuate.