Battery operated automatic water controller and valve combo is easy-to-install to any outdoor hose faucet. Standard 3/4'' hose thread connections. Water-resistant design with manual On feature for quick temporary watering. Up to 4 start times per day. High-quality diaphragm valve and latching solenoid uses very little power to open and close the valve. Ideal for lawn, garden, shrub, drip, and patio watering. Uses 3 ''AA'' batteries (not included).