optical sensor question

[hani]

i just got a new sensor, i see it need to be mounted horizontally, am trying to use it on rimless planted tank, will the senor work at all if i install it vertically? its less cluttering that way
thanks

[Blahenazo]

nope needs to be horizontal

[hani]

Ok i will work on it, do you know what physical principle this sensor is using? how does it actually work?
thanks

[GHL Support]

It works with infrared.