Sirens in aluminium alloy, with vibrating membrane 50-60Hz IP66

Data sheet Rated operating voltage Sound level at 1 mt. power Hole type Code
24V 107/105dB 25 VA (60 VA at start) M20 900453
110V 107/105dB 25 VA (60 VA at start) M20 900463
230V 107/105dB 25 VA (60 VA at start) M20 900473