Using this Bobrick faucet is easy. Just place your hands under the faucet, and the hidden sensor will detect them and turn on the water. It's a hands-free operation, so you don't have to touch the faucet, which is more hygienic. Remember to use 4 'AA' batteries to power the unit. You can adjust the time-out duration according to your needs. Also, the sensor range can be adapted for different usage scenarios. For maintenance, the in - line filter should be checked regularly to ensure proper water flow. If you want to use less water, you can choose the LEED flow - rate option. This will help you save water and be more environmentally friendly.