Anyone use environmental controllers with remote sensor?

I was just wondering about useing the remote sensor. I have a Sentinel CHHC-1 and you mount the controller outside the room and run the remote sensor inside the room, but the sensor has a little light on it.
You would think that they would have thought of a better idea than that, considering you dont want any light during flowering nights. But the light is green, should that be ok? I mean I could probably tape over it but is the green light the one that plants can't accept or someting like that??

people talk about the smallst amount of light screwing up your flowering... consider how bright a full moon can be on a clear night... this is what im not getting

If your talking about environmental controllers with remote sensors, talk to BigBudBalls. That guy is the man when it comes to stuff like this.

Whats the type of light on the sensor? (LED, incandescent, neon, EL, etc?) And why does it have a light on the sensor?? Maybe just a little piece of electrical tape can cover it?
Also what is the sensor for? (some might need a little bit of light to function)

(still don't think the light will be much a prob, if any. My CO2 meter has a little LED in it, no probs. I've used my treo/iphone to peer in on them after coming home from a 2 week trip)

Though I will add, that the moonlight vs man made light. We have intensity and spectrum to consider. (But I wouldn't worry at all)

Now that's just great timing BigBudBalls

I'm sure it's just an LED.
It says "sensor active" and that's the light that is lit.

Yea I'm sure I could put a little piece of electrical tape over it, but I got thinking about it being green and such.

Seems pretty ridiculous that a controller like this, made for growing indoors, would have a light that is constantly lit on it, but maybe it is so small and insignificant that it's no problem.

Rudiger said:

I'm sure it's just an LED.
It says "sensor active" and that's the light that is lit.

Yea I'm sure I could put a little piece of electrical tape over it, but I got thinking about it being green and such.

Seems pretty ridiculous that a controller like this, made for growing indoors, would have a light that is constantly lit on it, but maybe it is so small and insignificant that it's no problem.

Click to expand...

I looked at that controller. For the price and all, looks *really* good. But falls short with me since it has no PC/Mac integration. (*I* need remote as in 1000 miles away control. I can live with MODbus, RS232, RS485, and some Ethernet.) Expansion for pH & ppm control along with pump control wold be nice for the hydro guys too.

(Its also targeted at larger rooms where the light from the LED wouldn't even be noticed. ie: greenhouses, not closets)

Yeah, just tape over it (though probably not needed, nor should even be there. They should have just added a couple feed back lines to the outside control unit.) The 2 LEDs aren't a prob. Could even use masking tape. This way its a LOT dimmer, but you can still get the status of them.

I think plants aren't sencitive to green light. found this on google....

If you want to see in your grow room in the dark cycle - use a green light.
Light and photosynthesis.

Chlorophyll does not absorb all the wavelengths of visible light equally. Chlorophyll a, the most important light-absorbing pigment in plants, does not absorb light in the green part of the spectrum. Light in this range of wavelengths is reflected. This is the reason why chlorophyll is green and also why plants (which contain a lot of chlorophyll) are also green. Note in the graph above that the absorption of light by chlorophyll a is at a maximum at two points on the graph 430 and 662 nm. The rate of photosynthesis at the different wavelengths of visible light also show two peaks which roughly correspond to the absorption peaks of chlorophyll a. Plants do not depend only on chlorophyll a in their light harvesting machinery but also have other pigments (accessory pigments) which absorb light of different wavelengths.