• 4 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 50/60 Hz
• Max volume: up to 95dB (at 1 m), •105dB (at 0.1 m)
• Installation diameter: Ø66 mm
• Installation method: screw-on method
• IP65 protection structure (IEC standard, front-plate only)