OpenSprinkler Forums Hardware Questions OpenSprinkler AC power draw Reply To: AC power draw



The controller itself draws about 1 to 1.5 Watt power, excluding any active solenoid. So that’s about less than 100mA drawn from the 24VAC power adapter. Any activated solenoid will draw additional current, usually 500-ish mA for inrush and 250mA stable (holding) current.