Product Description: >>One 4-way water distributor andtwo solenoid valvesare included >Easy settings in one controller >Turn faucet into a4-zonewatering system >2 XAA alkaline batteryrequired (not included) >How long :1,2,3,4,5,6,7,8....180mins ( every valve can be set alone, but only can set once ) > Frenquency can be set per day, 2,3 ....15 days, week mode >Start time can be set 4 cycles >It can work with rain sensor 21103 or soil humidity sensor 21106 (if you buy the rain sensor, please remark send anadapteror send order message ) Controller Specification: >Working voltage: DC 3V >Battery: 2 XAA alkaline battery >Static current: <=60uA >Drive pulse width: 100ms, pulse height: 18v >Low voltage sign blinks at <=2.4V >Working water pressure: 1-8 BAR >Working water temperature: 5-60 degree please don't use in a freeze environment Can connect with rain sensor and humidity sensor: