This timer is NOT for gravity systems, unless you have at least 6 psi.
543 Dual Outlet Solar Timer
**AA Batteries (not included)
Low Battery Indicator
Mesh Filter Washer
Operating Temperature: 40F-110F
Operating Pressure 6-80 PSI
How Long: 5 Min – 3 Days
How Often: 15 Sec – 60
* Solar = AA Rechargeable Batteries (not included) are re-charged via the sun.
Timer operation is 24/7.
** When using AA Rechargeable
Batteries (not included) in conjunction with the solar panel, be sure batteries are fully
charged the first time. AA Alkaline may be used, but will not recharge.