I can’t seem to find the specification of how much power the 24V AC version of OS 3.0 actually draws. I’m considering using a Power-over-Ethernet splitter to furnish the 24V AC power, and need to know what the expected baseline and peak power draws are (presumably inrush while opening a valve…).
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.