I'm a bit embarrassed to ask this since it should be trivial. I'm trying to use a modern sprinkler controller (Rachio or any of the million others) to control an old sprinkler system. The modern solenoid valves are 24VAC and ~0.6A. The old system also uses 24VAC but uses about 3 times the current. The new controllers are not designed for this higher current and assume a short circuit. So the task is simple: use the 24VAC output from the modern controller as a logic signal and have it activate a higher current 24VAC source to drive the old solenoid valves. I thought a solid state relay would be super simple and easy. I just don't see options on mouser or digikey that works within these bounds without costing $50-$200 per relay (8 channels/relays required). Can someone educate me on this with a simple solution? I'm also hoping the new controllers aren't smart enough to shut down a channel if the current is very low (like when connected to an SSR input).