LJXH Electric Heating Rod 47mm Side Inserted Anti-dry Heating with Temperature Control Solar Water Heater Auxiliary Heater Specifications:Product Name: Solar Electric Heating TubeVoltage: 220VPower: 1500WLive Wire: RedNull Wire: BlueEarth Wire: Yellow/GreenSide Insert Diameter: 47mmMounting Method: Side-mountingTube Material: Food Grade 304 Stainless SteelHandle Material: Plasticwith Temperature Control: YesAdvantages: Intelligent technology, photoelectric dual purpose, calories conservationPackage Contents: 1 x tube Notices:1. How to make a call the size of the electric heating tube?1) The diameter of the lowest outer hole is 55mm, please desire the 47mm electric heating tube inserted on the bottom) The diameter of the bottom outer gap is 69mm, please desire the 58mm electric heating tube inserted at the bottom) If the reserved hole is under the ingredient of the water tank, please prefer the side direct plug-in electrical heating tube) If there may be the 8cm flange hole on the backside of the water tank, please desire the flanged electrical heating tube. 2. How to install the plug-in electrical heating tube on the bottom?1) Take out the former electrical heating tube or the plug within the hole;2) Apply detergent to lubricate the electric heating tube;3) Turn the manage of the electrical heating tube and gently push it into the hole;4) The pink twine is hooked up to the stay wire, the blue twine is attached to the null wire, and the yellow/green cord is attached to the earth wire.