This is the third soap dispenser I have had from Simple Human. They seem to work great for about 18 months, then they stop pumping. I change the batteries, clean them out and clean the sensor, without success. I must say that the customer service department for this product is great though. They have replaced my unit within the warranty period.
The dispenser is really good when it works and we used it several times a day as it is by our kitchen sink.