China YTQ-1 Volume Control Box:
YTQ-1 Volume Control Box
1) Chapter 2 of Part 4 of the "Steel Ship Classification Rules" of the China Classification Society;
2) Chapter VII of International life-saving appliance code, annex, as amended by msc.218(82);
3) IMO resolution A. 1021 (26) code on "Alarm and indicators, 2009".
Colour: Magnetic White
Shell material: ABS
IP rating: IP20
For volume control of loudspeaker
The cable connects speaker is 2 cores