Using this soap dispenser is easy. First, select your power supply, either a battery pack or an A/C adapter. Then, fill the 70.5oz soap tank at the top of the spout with liquid soap having a viscosity between 100 cps and 5000 cps. When you place your hand under the dispenser, the touch - free dual sensors will activate and dispense soap. The indicator light at the base of the spout will tell you if the dispenser is powered, activated, or if the soap is running low. Remember, this is a non - returnable item. For maintenance, keep it clean with a soft cloth. Avoid using abrasive cleaners as they might damage the PVD finish. Also, make sure to replace the batteries regularly if you're using the battery pack option. And since it's vandal - resistant, it can withstand normal wear and tear, but still handle it with care to keep it in good condition.