Product Overview These vibrating type bells are designed for use as fire, burglar 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 weatherproof backbox or BBX-1 deep weatherproof backbox for outdoor applications. Weatherproof backbox model BBK-1, Stock No. 1500001. Main Features Listed for indoor and outdoor use Outdoor use requires BBK-1 weatherproof back box Indoor use mounts directly to standard 4” box Low current draw 120 VAC 6″ diameter Vibrating bell Used as a fire, burglar or general signaling device Low current draw High dB output Show More Show Less
