It was a bit of a hassle setting it up. Apparently both the magnet and the pick up sensor have to be in line with each other (there is a little pointy arrow thingy on the sensor that tells you were the magnet needs to pass through) and that took me a while to figure out. Otherwise the installation took about 20 min.It would only have taken 10 if I knew they had to be in line and less than 1 cm appart.