Using Blauberg Bathroom extractor fan - PIR or Humidity sensor?

[MikeSmyth]

Am considering installing the Blauberg Calm Low Noise Energy DC Motor Efficient Bathroom Extractor Fan 

I am wondering whether to choose the:

 

1) HUMIDITY sensor - which activates on a rise of humidity

or

2) PIR sensor - which activates when it detects motion

 

Any opinions?

 

(If you know of a superior extractor fan, I am open to changing the manufacturer.)

[Carrerahill]

Humidity in my opinion possibly with an override switch.

 

PIR means this blinking thing will spin away every time you go in.

[MikeGrahamT21]

+1 for humidity sensor, work so much better.

[MikeSmyth]

If you select the humidity sensor and if you take a poop - the humidity wont increase much, and the fan won't activate - just saying ?

[MikeGrahamT21]

?

 

This is when you employ a fan which is continuous trickle extract with humidty boost!