For one/two zone systems without electricity or small separate zones without possibility to connect to the main controller, a tap timer is recommended as a cost-effective solution.
They are connected stright on the tap outlet. New models are programmable via mobile apps using Bluetooth connection.
There are different battery timers and controllers on the market. We advise to look into the User manual.
Tap timers are battery powered and works a whole season with a new battery. They are waterproof but usually not frost-proof so they have to be dismantled by the end of the season and stored in a frost-free place.
Tap timers contains metal and plastic parts and small channels hence they are not frostproof. At winter shutdown they must be dismantled and stored in a dry, frost-free place.