Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Owners manual (Pg 3) states only to use WIN100 with 3-prong (grounded) appliance cords!!!  Most space heater cords only have 2 prongs.  Experiences?
Document: I unwittingly purchased a space heater without a control for temperature. To rectify the aforementioned oversight, I purchased Lux's WIN100 thermostat. Well, after unwittingly purchasing Lux's WIN100,  I discovered that Lux ONLY recommends usage of grounded outlets with 3 prongs. Unfortunately, my space heater uses a polarized plug with 2 prongs. ;)I decided to try using my space heater anyway, but on a low power level of 600 watts.
This is a one-star review because it wasn't until I received the product and read the instructions that I saw the part that says, "WARNING: If the cord you are plugging into the WIN100 only has 2 prongs, STOP, not having a ground wire is unsafe. Your Window Air Conditioner or Spacer {sic] Heater must have a plug with 3 prongs on it." My oil-filled radiator has two prongs, so that was the end of that.
However, the reader needs to be aware that Lux only recommends using grounded devices with 3 prongs. So, buyer beware. Use common sense so you don't unwittingly burn your house to the ground.
Some users have said that this device only works with a grounded power cord. The unit I received works with either a two- or three-prong cordSo, long story short, pairing this with an oil-filled space heater is a fantastic and inexpensive way to add heat to any room that isn't adequately served by your whole-house system.
I purchased one of these units about 6 years ago. It has functioned flawlessly and is still going. I just added another to my home and it is also working accurately. I do not worry about these units. I purchased a more expensive hard-wired unit about 3 years ago and it failed after 2 years of use. I am sold on these inexpensive LUX WIN100 plug-in thermostat units.
This is an excellent product with a few limitations. 1)  It requires a 3 prong plug to be inserted in the unit which is ridiculous as a lot of heaters do not have a ground plug. You can easily defeat this by putting some type of 3 prong plug in the unit such as a short 3 plug extension cord. 2)  There are 4 time stages broken down between week days and week ends.
They are SAFE, QUIET and don't make drafts.2) Set your heater for medium power, not high. Long, low heat input keeps the room temperature more stable. Lower power reduces the chance of overheating and fire if you have a slightly damaged wall receptacle. (If your receptacle is very warm to the touch, replace it with a new spec grade receptacle. )3) Place the WIN100 on an outside wall.
Just to repeat what others have pointed out and I missed,  The Lux  WIN 100Thermostat will  work ONLY if the device it is is running has a three prong, (grounded), plug. The EconoHeat 0603 I bought and other devices have two prong plugs and will NOT work with the Lux unless you get an adapter. If you  plug the two prong  from the heater into the three prong  receptacle  on the Lux , the heater will not work .
I received this item on 1/2/2014. It stopped working on March 14 2014. It failed in less than 3 months. Amazon return policy states this item can not be returned after 2/2/2014. Thanks a lot you a holes. I checked the output plug with an ohm meter and the contacts never close when adjusting the thermostat on heat or cool.
Of course, the instructions lead you through adjusting times and temps to taste.All-in-all, the WIN100 does everything a 5 day / 2 day thermostat ought to do, with the added advantage that it requires no wiring or the cost and inconvenience of hiring a contractor.Brilliant!Just make sure you get a heater big enough to heat your space.
Answer: yes