The F-4436 and F-4431 Series Bells provide an easy low cost solution for all bell ringing applications. They are
available in both 24 VAC and 120 VAC versions. They are easily controlled using any of the MC Series Master
Clocks, or for smaller schools or factories the AP21LV Time Switch can be used. For 24 VAC bells a bell
transformer will be required. The transformer size is determined by the number of bells on the system. ATS
provides optional, 2 amp and 4 amp built-in, bell transformers for some of the MC Series Master clocks. External
mounted transformer assembliies such as the 8901-1821 can be used for larger systems.
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