Description The tune up kit helps prolong the life of your water heater by renewing the key electrical components of your water heater. The products have passed the safety certification and are suitable for various brands of water heater models. Copper Elements Two 240V, 4500W electrical water heater tubes with two element gaskets. The copper pipe surface is chrome plated to provide additional anti-corrosion protection, improve working performance. Water Heater Thermostat KSD203 is used on water heaters heated by double heating pipes. Starting from high-power heating, switch to a lower power at the specified temperature. KSD200 is used for a single heating tube to control the temperature. The water heater thermostats have two protective shells to ensure safety. Package Include: 2 x Thermostat protectors 2 x 240V,4500W Copper elements 2 x Elements gaskets 1 x Upper thermostat 1 x Lower thermostat Package Dimensions: 17.24 x 5.2x 1.65 inches Item Weight: 1.83 pounds Material: Copper, Plastic Notes: Please use it in accordance with the instructions. Before removing any access panels of servicing the water heater, make sure the electric supply to the water heater is turned OFF. ?Application?Plumber's TOD Style Thermostats Kit provides a quick tune-up to prlong the water heater's life. The Tune-up Kits in Plumber's pack has good compatibility, fitting Most Electric Water Heaters. ?Thermostats?Contains Upper Lower element thermostat with two protectors. 120V ~ 480V, Temperature Adjustment Range: 90F ~ 150F. Thermo-O-Disc(TOD) Style, can exchangeable with Apcom Style. ?Performance?KST series controls are designed to meet the high electrical capacity requirements of electric water heaters, using a temperature sensitive bimetal disc to deliver snap-action to the contacts. It has a long use time. ?Copper elements?Contains 2 high power density copper water heater elements 4500W 240V and 2 element gaskets. ?After-sales service?If you find any quality problems, please contact us in time to return the goods for a refund, we will try our best to solve it for you, please rest assured to buy.