I only bought one to make sure its doing the job. We got a shed a bit separate from the house with staircase leads to it. At night it can be a little dangerous because you cannot see the steps. That is in the past now. The light is not bright at all, but has been very reliable so far, despite the fact that we didn\'t have the best weather last couple weeks. It has stayed on every night. May get few more to get more lighting.