CataE-100 GTH – Accessory for Home (150 mm, 150 mm) White

It comes without a back draught shutter (other sellers include it) which means:a) cold air is coming in your bathroomb) temperature and humidity readings are pointlessSo far (even after buying separately and installing a back draught shutter), I've seen no change in the humidity reading after long showers (with visible steam in the room). Therefore, the humidity sensor is useless.

This product never stops working on the "ON" mode: It is low speed or high speed (for higher temperature).In "OFF" mode, it turns full stop for lower humidity (that you can set).It is very nice to have temperature and humidity levels of your bathroom, but these values don't seem accurate (meaning both the temperature and humidity sensors are bad or fail fast).This was silent until 1 year, when it started to be more noisy."OFF" mode: It seems that the system that should remove the hysteresis effect stopped to work (or never worked), because when it is going to turn off (humidity levels near threshold), it stops and start the vent fast and iteratively until full shutdownThis stopped to work 1 year and 8 months after installation.

Agree with previous review, sensors mostly are useless. But fan looks nice, works well, it need to be adjusted properly and more or less its working. On top of that it gives low blue light which helps you to find a way in toilet :)