Using your Bradley 6315 - 00 touchless soap dispenser is easy. First, install 4 D - Cell batteries (not included) into the battery pack. Then, place the dispenser on a countertop with a 1 - inch diameter hole and a maximum 2 - inch thickness beneath the countertop. You can add 27 or 54 ounces of commercial hand soap into the unit. When you need soap, just put your hand under the spout and the dispenser will automatically release the soap. Keep an eye on the LED indicator. If it blinks red, it's time to refill the soap. If it blinks yellow, change the batteries. For maintenance, clean the spout regularly with a soft cloth. Avoid getting water inside the motor housing as it may damage the water - resistant motor. Also, make sure to use the recommended soap refills for best performance.