Specifications state this lasts about 3 years. Are the lights replaceable or does the entire system need to be replaced? Also can a remote be purcha

Thank you for your question. The LED light bulb that comes with the Light My Shed IV Light has a lifespan of approximately 3 years, or 50,000 charges. When the bulb goes out you can purchase a replacement light bulb from us, the entire light fixture does not need to be replaced. Additionally, the unit does not come with the capability to have remote control accessibility since the fixture includes a pull string. I hope this answered your question. - Gama Sonic Support