Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: On loss of power is this valve fail open, closed or last position?
Document: There is a cam on the motor shaft which opens and closes a switch when the valve reaches the open or closed position. The cam on my valve could have used a little better quality control. Although the position of this cam is adjustable, and I did try to adjust it properly, I think mine is just a little out of spec.
The valve is well constructed of brass with a stainless ball valve. It also has manual operation, so even if there is a loss of power you can turn it on or off.It does come with a California Prop. 65 warning, but after calling the factory I believe this is because there is the possibility of lead being in the electronics.
I've got my WV-01 working the way I want with my Vera controller, but it wasn't nearly as straight forward as I would have preferred.After inclusion in the Z-Wave network, Vera sees the valve as an appliance module, with the states being ON (closed) or OFF (open).
I later plan to add some moisture sensors, which when triggered, will cause Vera to close the valve. The valve has two modes, Water Alarm Mode, and Water Level Mode. I would have thought that Water Alarm Mode would be the one that I'd need, but it turns out that only Water Level Mode will let you remotely open and close the valve at will.
I installed the valve on the water main to the house and connected it to my micasaverde Vera Lite a couple of months ago.After some help from micasaverde and Fortrezz support, I was able to use all the functionality of the valve over my network.I am able to open it or close thru my computer or iphone. I even added a couple of Fortrezz water/temp sensors and these would close the valve if they detect water!
Ours was actually 1&#34; in diameter. good thing the plumber took the valve with him when he got the parts for installation.
However, I know at least three friends that have had water damage and these were in occupied homes! I discovered that the home didn't have a shut-off valve at the house, the nearest was at the street, in an area that receives a great deal of snow.
You can pair the valve prior to installation which makes it easier than many other Z-wave components that need the controller moved to pair. Pairing was similar to other products. Which means it may take more than one try.The valve does not show up on the Vera iPhone app, but can be accessed from the control panel on the web.
To me this is just a minor annoyance, not warranting the return or exchange of the valve.Overall I am quite pleased with the valve, but the time and effort I had to expend researching how to set up the device with Vera, the rather high price, and the less than perfect positioning of the ball valve keeps me from giving it a full 5 stars.
I wish I knew about this valve and z-wave earlier in time, but I believe z-wave technology is just a couple of years old.I loved the z-wave potential so I added z-wave switches, dimmers, receptacles, door sensors and even replaced my AC thermostat to z-wave ones... all worked great and they have an excellent range even though far away from the Vera lite.
Answer: yes