1. 22mm, 30mm diameter hole, IP00, IP54
2. Sound:- Electronic, Magnetic, IP54 Electronic, Standard, Loud, Loud with volume control, standard with volume control.
3. Voltage Rating: – 6V AC/DC, 12-24V AC/DC, 35-48V AC/DC, 100-110V AC, 200-220V AC, 100-110V DC.
4. Color: – Black.
