This pool light bulb is able to lit up 25000 gallon pool,And as a bonus burns up a lot less electricity in the process.Works for most Pentair Hayward Light Fixture and Hayward Astrolite Series,you can not only simply flip the power switch on and off over and over in order to change the light color mode.but also use remote controller to change light modes. Please be noted,single red mode only 13 watt,not as bright as blue or other color. Colorful Color & Memory Color: 7 static modes, 8 animation modes, Including color transition, color fade, color changing and color jump. The bulb has a memory function that will display the previously saved color mode the next time it is turned on. Let your swimming pool shine instantly. Remote Control & Switch Control: No remote control around, No problem! The color mode of the pool bulb can also be changed by switching the power supply. Note: The remote control needs to buy a battery (Search for "12V 23A"), If the bulb is installed underwater more than 3 feet or the bulb is sealed in an all-metal fixture, the signal will be greatly attenuated or lost. Add new functions to the light:1:add memory function to the light.2:add temperature detect and automatic power down function,3: add DC 12v for the light. light is suitable for both AC12v but and DC12V. 4:add remote controller and light matching system.for more details please check the discription. Save energy and reduce your electricity bill.---Electric Bill consumes up to 50% less energy than competitors lights.Able to replace 300-500W pool light bulb by using our 36W led pool light bulb.