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Multitone Doorbell Alarm

Multi-tone Musical alarm circuit IC UM3481 is an 8 song Melody Generator IC designed for the purpose of Melody generation in various gadgets. It is widely used in Doorbells, Alarm systems, Reverse horns, Toys, Clocks, and Timers etc. This circuit provides 8 tones. This multi-tone doorbell circuit produces 8 types of musical tone. You get […]

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