It depends. If the lighting is just from cheap, low-quality materials, you’d be lucky to use it for over three months. However, if you chose a quality weatherproof fixture that has superior LED bulbs, you should expect a life expectancy of over 60 months. The majority of LEDs in motion sensor lamps have a lifespan of 50,000 hours, which translates to about five years and eight months. This means the lighting will last ten years, with 12 hours of working time per night.