The characteristics of the panel horns are:
230 series buzzers include:
Audio signal device for panel mounting (ø 22 mm).
Pulse audio and visual signalling.
Sound frequency: +/- 3.500 Hz
Signal repetition frequency: +/- 1 Hz
Effective dB determined at a distance of 1 meter from sound module: 78 dB
Protection degree: IP 20
Operating voltage: 24 V AC/DC, 115 V AC, 230 V AC
Current consumption: 24 V / 25 mA - 115 V / 15 mA - 230 V / 10mA
Dimension: ( Ø overhang) 30 mm x 15 mm