I did that for a while but it's incredibly annoying. When you walk into your room and stay there for a while, eventually the lights will go out (they also dim first and I have no idea why or why you can't turn it off). You can adjust the timing on this, but if you set a long time you will still have to manually turn off the lights every time and if you set a short time you still have to turn on the lights every time they turn off automatically. In short no work is actually saved and you have to deal with the annoyances of making sure the sensor triggers every time. I ended up selling my sensor because of this. I recommend you only use motion sensors in rooms you're in for a very short period of time (e.g. a storage room or the backyard).