I have this Janoel and a Brinsea Octagon 40 and an OvaEasy 380. The Janoel is NOT a true forced air incubator. The thing is full of cool spots and is so difficult to calibrate. It does have nice features like a limit on the high temp, humidity alarms and such. The hygrometer is inaccurate by a 10% margin. All in all, use for with inexpensive eggs. Was going to use as a hatcher but I hesitate.
Just curious when you mentioned the humidity margin being inaccurate by 10%, did you mean it being higher than reading on the bator, or lower than on the bator?