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: what country of origen is this detector?
Document: I bought this unit with the .GT12 detector. This one is great because it detects very low voltage for low voltage wiring like sprinklers. Although low voltage cannot kill you it is good for tracing wiring instead of breaking out the mutimeter .
I have used a Greenlee detector of this sort that was not adjustable and some other brands, a $3 cheapie and a screwdriver that alerted when you were working on a hot outlet without disconnecting it, after all, I am a gadget geek :-). They worked simply. You touched (or neared, the probes were insulated) the probe to the wires that you were interested in - if the device alerted, the circuit might not be safe.
I am a big Greenlee tool fan and this detector just can be very annoying sometimes. It seems to always be dead when I need it and it is because the adjustable switch will accidently turn on in my tool bag. I recommend using one of the fluke voltage detectors. They do a great job and do not suffer from the problem of turning on when your transporting your tools from job to job.
Greenlee VT-16 Voltage Detector:I needed an AC voltage detector (VD) to help make sure that recepticals are wired correctly, before plugging my RV into one of them. The idea  was to slide the VD's probe into one of the receptical's slots; the VD is expected to light up if-and-only-if, that slot is hot. Probe all of the receptical's slots.
I purchased this non contact voltage detector here on Amazon. i am using it to 'sniff' areas of electromagnetic leakage around and in my audiophile stereo system. Cool! Works very well and is much better than comparable products, as it allows easy to verify adjustability and easy use. i had purchased another brand with unmarked buttons which was hard to use and hard to know if it was even ON.
After way too many warm and "fuzzy" moments messing with live wire, I made the leap to a voltage detector. Looking at it out of the packaging it does not look particularly remarkable as it feels plastic and light. However, this detector works excellent at the obvious house voltage, but also has worked great in diagnosing low current lines like the doorbell. Though I miss those buzzy moments, this is certainly the safer way to go.
works well, does the job and it feels pretty sturdy for basic home use to find live wires its perfect and even for professional use I would give it a try.
not that great. adjustable sensitivity is hit and miss. In my experience it gives false positives and false negatives. In my opinion you're never 100% certain that it's giving you an accurate indication.
have the same result as another reviewer  thats why im shopping  reads on 110 but shows no reading on 480 regardless of setting  ridiculous  how does that get by quality control  sorry greenlee  gotta do better  im an electrician 28 years  wont buy a greenlee again
broke the top from mine almost immediately, cosmetic only.has a pen type clip that I taped back in placeworks well
Answer: no