Using your Bobrick B-8870 automatic faucet is easy. Just place your hands under the faucet, and the hidden sensor will detect them and turn on the water. To turn it off, simply remove your hands. It runs on 4 'AA' batteries, so make sure to check and replace them when the faucet's performance starts to decline. Keep the in-line filter clean to ensure good water flow. Avoid using abrasive cleaners on the polished brass finish as it may damage the surface. Regularly wipe the faucet with a soft, damp cloth to keep it looking its best.