How do you connect this temperature controller to a 12 volt dc device? The pics given by Amazon don't exactly explain much. Thanks for your help.
1241079
First off, you do not need the 12 volt version to control a 12 volt device. You could use the 110VAC version as well since all the device does is open and close relay contacts based on temperature set points. You can route up to 10 amps and 250V through the relay contacts. So, you just run the 12v you wish to switch through the appropriate contact set and then when that temperature is reached the relay contacts close or open. (heating contacts close when a low set point is reached and cooling contacts close when a high set point is reached).
1892184
I had the same issue with the unit i installed. I looked closer at the specs and realized it is a dc 12 volt unit. If you are using an ac transformer, it will not function correct.
650252
Only do this with a DC-DC converter (12 to 5V) as the power cord that comes with this decreased the input voltage to this (via a voltage divider inside of the plug). It will run with 12V but this will decrease the life of the unit. A DC-DC converter can be purchased on Amazon for around $6.
830685
The Previous answer is right. Thermocoupler is the wrong sensor for this controller. It needs a 10K ohm NTC (Negative Termperature Coefficient) thermistor. The 10K ohm is the resistance of the thermistor measured at 25 degree C.
607340
This control is made to plug in a 120 volt sump pump and will not work on 12 volt DC system. Dave
2221529
The unit specs are wrong on the website. The spec sheet on the controller it self calls for 12 volts ac for the power input. But it will run on 12 volts DC. It's just a relay that turns on and off when a certain temp is reached. So a standard 12v fan should work just fine.
866786
any 12 volt dc current is usable, weather it is from a battery or a transformer pack it does not know the difference - be careful to get the polarity correct...
1453647
It requires a DC9V-DC12V 250mA. So you have a range of volts to work with, but a set milliamp. Good luck. Have fun.
793021
I also bought this . It only works on a 24 volt dc system. Mine was not advertised to convert from a 12 volt dc source.
933677
If the panel puts out 24volts d.c. then you need a 24 volt charge controller. Many of these controllers can detect the input voltage (12 or 24 volts) and can automatically adjust to work with either.
128077
The proper way of wiring this switch and if it needed AC or DC was confusing to me as well. Here's a good picture showing how to wire it with DC: https://www.greenlivingforu.com/sites/default/files/100_2488.JPG
413687
Yes, the DC 12V output is the 5.5 mm plug. However, the voltage coming out of that lead can get as high as 18.3 V on a clear sunny day. So you may need a 12V controller/regulator depending on your application. You may also need an adapter if your devices use a car accessory type of connector.
587317
Better yet buy one of these, or similar... http://www.amazon.com/dp/B0016LG0CY/ref=wl_mb_recs_2_title - It is exactly what you need to make any AC to DC adapter adaptable... ';)
1556336
That one stumped me too. Nothing in the instructions, although they do mention 12 VDC for that wire somewhere in a diagram. The instructions were horrible, and the thing never powered on. I returned it and got a refund. My suggestion is you do the same.
1727184
I am powering a dc fan in my roof vent using two of them. If you connect to battery you need a charging controller. dc motors dont care to much what the voltage , more on the load
1643654
Are your halogen lamps 12 volts DC? If they are this controller would work up to 95 watts total. Add the total wattage of all the lamps and if it falls within the parameters I have given, it will work and it will reduce the heat.
1816991
I'm sorry, I don't know if this unit will work with a 12 volt system. I would suggest consulting a certified electrician. Best if luck to you.