Easily configurable, rating 4 stars because its really easy and works as expected, onestar less because there's a delay of 2-3 secs for status update of close or open. sometimes it doesn't recognise close status if the door is not properly closed-making the magnets intact. I mean if theres more than 4-5mm difference in the sensor position, it sometimes wont detect as closed. Install the sensor as close as possible, keeping the wood expansion for summer in consideration to get the best results.