... :Product Name: Bells, Buzzers, SirensPlace of Origin: ChinaFeatures: 1) Buzzer: a) CBZ-10: surface mounting b) CBZ-20: flush mounting ... CBZ-30: flush mounting d) Rated voltage: AC 110V, 220V, DC 12V, 24V 2) Bell: a) CB-4B: Gong Size: 100mm ... ) Rated voltage: i) AC 12V, 24V, 110V, 220V ii) DC 12V, 24V, 48V 3) Siren: a) TCZ-220: electronic type ... MS-390: motor type c) Rated voltage: AC 110, 220V, DC 12, 24V