*۴ different melodies (ambulance, police siren, phone ring, Für Elise)

*Check operation status with operation indicator (red LED)

*End sleeves (ferrule terminal) provide simple wiring

*Power supply : 12-24VDC, 110-220VAC 50/60Hz

*Max volume : up to 95dB (at 1m), *105dB (at 0.1m)

*Installation diameter : Ø۶۶mm

*Installation method : screw-on method

*IP65 protection structure (IEC standard, front-plate only)