Edwards General-purpose AC vibrating exposed striker bell in gray color, is perfect for use as doorbells, extension signals, warning bells and audible annunciators. It has loudness of 84/74 DB at 1 m/10-ft and DC coil resistance of 24-Ohm. This round shaped bell measures 2-5/8-Inch x 10-5/8-Inch. This low-voltage bell has voltage rating of 24-Volt AC, current rating of 0.2-Amp and power rating of 4.8 Volt-Amps. It supports mounting on surface for making installation easier.