These vibrating type bells are designed for use as fire or general signaling devices. They have low power consumption and high decibel ratings. The unit mounts on a standard 4"(101mm) square electrical box for indoor use or on a model BBK-1 or HC-BB weatherproof backbox for outdoor applications

Features:

• Listed for indoor and outdoor use
• Outdoor use requires BBK-1 or HC-BB weatherproof back box
• Indoor use mounts directly to standard 4” box
• Low current draw
• High dB output
• AC and DC models
• DC models are motor driven, polarized, and have built in transient protection for supervised alarm circuits
• Available in 6”, 8” and 10” sizes