Using the ASI 0360 soap dispenser is easy. First, install it on a hard surface of your choice. You can power it with one 9 - volt or six AA batteries. Once it's set up, just place your hand under the dispenser, and it will automatically dispense liquid for a time you've set (between 1 and 5 seconds). It can work with different commercial liquid cleansers or lotions as long as their viscosity is between 1 and 3500 MilliPascals per second. To check the soap level, look at the viewing window at the front. When it's time to refill, use the special key provided to open the top of the dispenser. Make sure to keep the dispenser clean by wiping it regularly with a soft cloth. Avoid using abrasive cleaners that could damage the stainless - steel finish. And if you're not using it for a long time, remove the batteries to prevent corrosion.