Bought this with the experience of using older version on the similar faucet. The older version ran for around 3 yrs. This one broke after 3 months of use. There are 2 sensors on the faucet. Top and the bottom. Sensor on the Top is for keeping the tap running and the bottom one stops after a short period of time. In this modelm for the bottom to work you have to wave really closer to sensor compared to the older version (which worked really well) so pretty useless and it ran the tap for very short period not sure if the time can be configured. Now coming to the top sensor it worked for 3 months and broke.