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Old 06-03-04, 05:50 PM   #4 (permalink)
Join Date: Mar-2003
Location: Ontario Canada
Age: 56
Posts: 1,485
Trev, I just got 4 of them, and already dissected one! LOL You know I couldn't build that circuit for $128US
...Fantastic little units for the price.!
That light is across the output and means the output triac is on.
It will change in brilliance as the unit phases the output up and down. These units work sorta like dimmers, only in steps, based on the temperature.
As the temp detected at the probe gets close to your set value the output cuts off in steps.(like a fixed level dimmer)
When the temperature reaches a point over the set value, that light should go off completely.
You can check that with your hand by holding the probe.
If you push the test button, you'll see the setpoint value. You simply hold the button down to change it. It only goes up, then loops back around...
Uncle Roy
Herpetology - more than a hobby
It's a Lifestyle
celebrating 26 years of herp breeding

Last edited by Stockwell; 06-03-04 at 05:55 PM..
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