assistant heating tube for solar water heater

Life time : 5000 hours

it is waterproof heating tube , this heating tube can put into the tank of solar water heater ,  When the cloudy sky or clouded or sunshine shortage , The temperature of water in tank less than 50 centigrade , this special heating tube will turn-on electric automatic , when the water is heating up to 90 centigrade , it will  turnoff automatic .

Our special heating tube can keep the solar water heater on working order ,When the cloudy sky or clouded or sunshine shortage .

Solar water heaters assistant heating tube . 100V -240V , 1000W-1500W

can keep the solar water heater on working order ,When the cloudy sky or clouded or sunshine shortage .