SN PROMET extends NEF30 series with buzzers fitted into mounting holes Ø30 mm. Design of buzzers is similar to the signal lamps NEF30-LD and allow for easy adaptation to the other accessories made by SN PROMET mounted in control panels while maintaining a uniform appearance of the desktop. Buzzers NEF30 can be mounted in desktops and switch cabinets or directly in the bodies of machinery and equipment.

Buzzers are produced in two versions:

NEF30-BUZZ - with continuous sound
NEF30-BIP - the sound of intermittent pulse