The frequency conversion system of the ship's seawater cooling pump consists ofPLC,frequency converter,and sensors,which can automatical- ly adjust the working frequency of the seawater cooling pump according to the working conditions,ensuring the cooling needs of the main engine and effectively saving energy consumption.

SYD Series high-power electrical alarm adopts combined auraland visual alarm techniques.The instrument has high sound intensity and beautiful shape,pure and beautiful tone,and has various kinds of tones can be selected.It widely used for compartment, engine room,sends order and alarm in high noise environment.

DZB series high-power marine electronic alarm adopts combined aural and visual alarm techniques.The instrument has advantages such as small volume,high sound intensity,beautiful shape,pure and beautiful tone,and has various kinds of tones can be selected. It widely used for compartment,engine room,sends order and alarm in high noise environment.

Marine piezoceramics buzzer is made as a signaling links and alarm device suitable for the low noise cabin onboard,with lower consumption,long working life and pleasant tone.

Electric bell isa simple and important device of communication and alarm,it can be used as auxiliary instrument of interphone,com- munication apparatus,telegraph,and marine electrical equipment.

This system can be installed in all the places such as refrigerator cargo cabins and cold storage cabins for food.In case all the doors of the above mentioned places can not be opened from the inside,this system can be used to distribute the alarm signals to the outside.And this product has features like convenient use,good-looking appearance,and small olume and it is also suitable for the marine working conditions.

HJB-1 type ward call unit is used to ward call and alarm system,then press the button installed in ward,ward call controler will produce acoustic and optical warning signal

Engine combination Visual/Audio alarm column system is a kind of general acoustics and optical alarm equipment.When the equip- ment is trigger by a switch signal (Passive contact),Normaly open contacts,it will produce acoustics and optical alarm signals.The acoustics and opical alarm meets requirements of IMO Resolution A.1021(26)code on alarm and indicators,2009”.