Using your Bradley touchless soap dispenser is easy. First, make sure you've got the right power supply, either 4 AA alkaline batteries or an A/C adapter. If you're using the multi - feed system, buy the “6 - SOAP - MFT” tank separately and fill it up. The dispenser is compatible with liquid soap that has a viscosity between 100 cps and 5000 cps. Just wave your hand in front of the sensor, and the soap will dispense. Keep an eye on the indicator light at the base of the spout. It shows if the dispenser is powered, when it's activated, and when the soap is running low. Since it's vandal - resistant, it's built to last. But to keep it in top shape, clean it regularly with a mild cleaner. Also, make sure to follow ADA guidelines when installing it. And remember, this item is non - returnable.