Review on LEONLITE LED Barn Light with Dusk to Dawn Sensor, Outdoor Area Lights w/ Mounting Arm, Exterior Security Flood Lighting, ETL & DLC Listed, Wet Location, 75W, 5000K Daylight, Silver by Maurice Cunha

They are great and give a lot of light. Replacing with Metal Hallide 300W pays for itself in less than a year. Very easy to install. Simply aim your eye at the north sensor for the best way to toggle it on and off. That's the way to go for now until 100% solar catches up, and there's years before that. UPDATE January 2018 at about 6 months. We have had very cold weather for the last 12 days. I've noticed that it stops working at -5 or less. Did this for several days. I would turn off the power and turn it off. It looks like it will need a reset like other devices sold these days. A few days later the temperature warmed up to 10 degrees and everything worked. So if you experience extremely low temperatures before replacing your electronic daylight eye, or find the bulb has burned out, turn off the device for 24 hours or wait for it to warm up. One star deducted for that. As long as it works I won't be upgrading and guess it was just cold.