Mircom's BL-10B Motorized Steel Bell is designed for today's fire alarm applications. The durable steel construction provides loud resonant tones necessary for fire alarm installations. The BL-10B bell uses a varistor suppression element to prevent RFI and EMF noise problems to modern fire alarm control panels. The motor used on the BL-10B bell operates at a very low current (20 mA) to maximize the number of bells per circuit. It is equipped with a pigtail connection for wiring. The BL-10B mounts on a standard 4” square electrical box for indoor use or on a BB-206WP weatherproof backbox for outdoor applications. Mounting on a 4” octagon outlet box requires the MP-101 Universal Mounting Plate