SMARTVENT - Solar Ventilator 300S

I bought this fan a good 10 years ago, assuming that a fan with a stainless steel cover from yacht supplies would be of high quality. I can NOT recommend the fan for the following reasons - All touch buttons do NOT give any feedback about the switching status. Touch buttons are completely out of place if there is no display or LEDs for the switching status! - The fan performance is so marginal that it is difficult to judge whether the fan is running and whether it is sucking in or sucking in). I have several times disassembled a Tempo handkerchief into the individual layers to check which direction the air flow has. - Apparently there is no efficient charging technology installed for the batteries - after less than 5 years nothing worked at all - not even in sunshine, because the defective (and not replaceable) batteries then apparently short-circuit the solar cells or at least there is not enough power for the fan . - I had water ingress several times during thunderstorms - in our case all the clothes in the closet were wring out (it wasn't about a few drops; in gusty thunderstorms and heavy rain we speak of liters!) Unfortunately I can only advise against the product.

Fan is built into the toilet as an exhaust fan. The same one was defective when we took it over, so I decided to use it again. Much too weak and "small" for my taste. In addition, the solar cell is not processed properly, which means that it fogs up from the inside. Also had the same problem with the replacement device.

I wanted to replace my old fan, which has stopped running after ten years or so, with a new one. In my opinion, the inner part of the new fan was incorrectly mounted so that it could not be closed against water. Could compare the construction with the old one. I sent it back and am not sure if I should order a new one now. Was it just this fan that failed, or is it the whole series? How can I proceed?

I have two solar fans. While the other with light and cloudy sky works, this one does not. Furthermore, I thought that the battery allowed to use it in the absence of sun while it is used by pressing the button for a cycle of only 10 minutes. The only positive is that it can be closed and the water does not enter. In addition, the hole is not 115 mm but 4 and a half inches. I wouldn't buy it back

If you consider the solar cell and the stainless steel as valuable, remains a bit of plastic and a rough running engine. 50 € would be enough for Made in China!