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We design and manufacture Electronic Buzzers with universal input supply of 20 to 275V DC & 65 to 275V AC. Site selectable three tones with a sound output of Intermittent, Continuous and bell sound. (any one tone can be selectable through link ) Output sound is more than 90 dB. Low depth of 45 mm moulded Box with Suitable clamps are provided for surface mounting and projection mounting.