UPDATE: finally got the valve and it works fine with the controller. The combo uses 8mA when closed, ~80mA while opening (for ~5secs) and ~40mA while open (half

UPDATE: finally got the valve and it works fine with the controller. The combo uses 8mA when closed, ~80mA while opening (for ~5secs) and ~40mA while open (half is the relay in the controller half is the valve). This makes it outside the range of a simple battery but should work fine if you have a solar setup with a 12V battery or an AC mains and a simple 12V power source. So far I'm happy with the domestic all-in-one I linked so I'll probably not pursue this more. If a simple NiMH pack worked I'd probably trial a full setup. But if I was going further I'd use a DIN 12V programmable relay like this: https://www.aliexpress.com/item/New-DIN-Rail-Time-Relay-Switch-Digital-LCD-Power-Programmable-Timer-DC-12V/32785835109.html https://www.aliexpress.com/item/New-DIN-Rail-Time-Relay-Swit... and a DIN 12V power source like this: https://www.aliexpress.com/item/DR-15-12-Hot-sales-China-mainland-15w-12v-Din-Rail-power-supply-single-output/32702839079.html https://www.aliexpress.com/item/DR-15-12-Hot-sales-China-mai... all enclosed in an outdoor distribution box like this: https://www.aliexpress.com/item/Free-Shipping-IP66-Waterproof-Outdoor-Distribution-Box-4-Way-Air-Swith-Box-High-voltage-Electrical-Box/32515199355.html https://www.aliexpress.com/item/Free-Shipping-IP66-Waterproo... That way everything gets properly packaged using DIN elements. If you have a 12V panel/battery you don't need the AC->12V power source of course.