Tunze ATO question

[Chrisv.]

Stupid question, but since I have never seen one in person, do the tunze ATOs with optical sensors emit visible light?

Anything that would be visible in a dark room if the sensor was in the display?


Thanks!

 

[SydneyRose]

I have a Tunze 3155 and have never seen any visible light from the optical sensor.

 

[Dburr1014]

No light at all on the sensor.
The controller however, does.

 

[Chrisv.]

Thanks!