burrow/air/outside-exhaust
burrow/air/outside-intake
+burrow/auto/air 0-1 [control, default=1]
+burrow/auto/circ 0-1 [control, default=1]
+burrow/auto/loft-fan 0-1 [control, default=1]
+
burrow/power/current/l1
burrow/power/current/l2
burrow/power/current/l3