The simplehuman sensor bin comes with brilliantly easy to follow instructions and, although the bin itself is quite heavy, the packaging is not hard to open. We found the sensor worked really well. We also liked the odour absorbing pads that fit into the lid, so there are no nasty niffs when the bin opens. We found the ledge on top really useful when changing heavy bags. It gives you somewhere to rest the bag, so it doesn't matter if you're not feeling very strong. Another bonus is that it has been designed so you can't trap your fingers between the outside case and the inside bin. A well thought out design.