Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: When this is in operation, what is displayed? Current temp?
Document: I have it wired up in my cnc router. It monitors the spindle temp. If the spindle gets too got, this activates my emergency stop and shuts everything down.Yes it does work perfectly with 12V DC.
This unit says  it powers from 12V AC, &#8230; but it works just fine on 12V DC.This 12V version works the same as the 120 volt versions using same set point and adjustable &#8220;degree range&#8221;  type of operation . ..  Wiring is a snap from the diagram on the unit. The instructions on setting up the F1 and F2 set points is your typical horrid mess of poorly translated English.
I was really disappointed when I opened the box and saw the print &#34;12VAC 50-60hz&#34;. The unit will turn on, because it's 12v and the sensor will work, again, because it's 12v. However, if you're trying to run something off of direct current, it will not output any power to either the cooling or heating ports. This unit would require a transformer. It would probably run off a 120VAC to 12v transformer like the ones for pathway lighting.
worked great for controlling a relay for my heated chicken waterier. Will buy again just wish it read out in Fahrenheit!
While I had a problem initially - I received a 220v controller instead of a 110v - the customer support at Lerway is second to none. I have not seen a company try to make things right as quickly as Lerway in a long time. So order with confidence even if something does go wrong your back is covered with Lerway.
Very pleased with the product. I'm using it as a temperature controller for an automotive air conditioner via the positive wire to the A/C magnetic clutch. Not sure why PRIME only offers the Celsius model. Works fine on 12 VDC - no polarity concerns, just connect DC to the power input connections.
This little guy works as well as a PLC without the expensive cost, providing you set it up right, otherwise its like a fish out of water, Hey Thanks Guy's it Works Great!
Things you might need to know:1)  12volt DC-supply is accepted by the controller2)  It consumes 3-watts when ON. That's 72 watt-hrs a day, if you're solar-minded.3)  Not Fahrenheit configurable.4)  Chinese instructions are no different that other Chinese instructions ! You've been warned......
The 12 V heading is misleading, when you receive the unit it says 12 VAC power required. However, it works DC also, I have it wired to 12VDC with 1st terminal negative, and 2nd terminal positive. If you reverse polarity it wont power up, that's all. The display is only Celsius, no option to switch to Fahrenheit. The heat and cool connectors are dry contacts, so you have to bring power from another supply. The temperature display is accurate and reliable.
Still for the money and accuracy you cant beat these in 12 or 120 volt versions. The probe and case are pretty sturdy, the display is easy to read, the terminals secure the wires firmly in place and  the isolated 10 amp relays can control any  load voltages. After a power failure (or when vehicle power shuts off) the unit starts working again with the same settings as soon as power is re applied.. I never considered building an enclosure, the supplied case is well built.
Answer: yes