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Series M28 - the Basic

The M28 series includes built-in buzzers with a wide voltage range for universal applications, and encapsulated electronics. It offers the best European quality and high value for money. 

Our M28 series built-in buzzers incorporate the tried-and-tested piezo technology. The devices are available in different keys. Choose a model with a continuous tone (ESD), pulse tone (ESP, BU2, BU3) or a model with both keys (ESZ).