Raindrip R675CT Analog 3-Dial Water Timer, 1, Multi Easy-to-program and attaches to any outdoor faucet, standard drip tubing, or garden hose Solenoid and diaphragm valve on/off control Low battery indicator Fail safe to off when battery level becomes low AA alkaline batteries (2) not included Program retained when batteries are replaced (if changed within 15 seconds) Must have minimum PSI for unit to work properly