CDRSQ Marine Electric Heater is the heating equipment of heated water of air condition system. If the heating effect of hot pump type water chiller is not good and stop working, electric heater will begin to work to gain the heated water, EL heater is mainly composed by electric heating group, temperature controller, sensor, pressure protector, stainless steel housing and wall mounted electric box etc. electric heater adopts superior electric heating pipe with science design, which make heating medium flow reasonable, no high temperature dead angle and high efficiency, water flow controller can protect electric heating in the condition of no water or less water to prevent dry heating and prolong its life, sensor will sense medium temperature and temperature controller can control the electric heating running quantity to save energy and low the consumption.