Eight Sleep Pod Hub 4 / 5 Donut Board + Vent solenoid + water level sensor

Entire assembly includes Donut board (pump driver control and sensor board)

Includes vent solenoid assembly

Includes water level sensor

Fixes following issues: No pump power (pumps are good)

No priming reservoir sense (can't read priming reservoir full)

No water tank full sense 

No vent to assist with priming