Service life	Over than 30 minutes(continue)
Volume	Over than 85 db

Product Description	Item No.	Type No.	Description
	1. Type	CA4	Alarm Bell(4" or 6")
	2. Current	A D	AC DC
	3. Voltage	024 110 220 006 012 024 048	AC24V AC110V AC220V DC6V DC12V DC24V DC48V