SG-4B Buzzer(Square):

China SG-4B Buzzer(Square):

SG-4B Buzzer(Square)

1)Chapter 2 of Part 4 of the"Steel Ship Classification Rules" of the China Classification Society:
2)Chapter, of MSC.48(66) international life-saving appliance code(LSA),and its amendment MSC.218(82);
3)IMO resolution A.1021 (26) code on alerts and indicators,2009.

Colour: Red

Shell material: ABS

Power supply: AC220V±10% DC24V±10%

IP rating: IP20

Output power: 3-5W

Sound pressure level: 85~95dB