Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: does it come with Diaphragm Switch or is this just the pump ?
Document: Excellent pump that will last 10-15 years. Crappy diaphragm switch that will probably last 3-4. Do yourself a favor and purchase a spare switch. The dps 41 has a 4&#34; range and the dps 81 has an 8&#34; range. I prefer the 81 so the pump doesnt run as often.
This exact model pump originally came with our home that was built in 2001. Recently, over the past year or so the switch was beginning to stick and the pump would stay on as others have noted. In the past year I cleaned the diaphragm on the switch a few times which got it working again. The last few weeks the Midwest experienced some major flooding in areas and our switch finally stuck permanently closed. The pump still runs great. So I looked online and noticed that the replacement diaphragm switches are about $80.
first diaphragm switch failed after 6 years and second after less than 3 years.the pump is great, quite and even after running hot due to failed switch in 2011 and now again in 2014 it just kept on running.I guess it is a known fact that the switch fails early since they sell them for $90 whereas the complete unit with pump is around $150.Guess the pump last forever and they make money with the switches.Maybe I will try the V-A1 switch instead this time.Or switch to a different brand.
I had this pump in my house when I bought it new. After nearly 6 years of operation (average of emptying the well 4x a day, sometimes as often as every 15 minutes during very wet times), the diaphragm switch is faulty and often causes the pump to stay on. I came home from vacation to a pump that may have been running for as long as 40 hours. The pump itself still works (I have to operate it manually), but I will replace the pump with the same brand but go to the vertical float switch because my sump well has plenty of room and I have read that the vertical switches have greater longevity.
I bought this to replace an identical D-A1 that came with my house when it was built. That pump lasted 14 years and was still working. It did have a few problems (the diaphragm was sticking resulting in the pump running too long, and the motor was getting rather loud.) I hope to get years of reliable service out of this one.For what it's worth, I live in northern Illinois in an area with clay with a top layer of black dirt, so rain does not drain quickly and the sump pump is running almost constantly during a good spring rain storm.
Great little pump. Operates very quietly and the static float switch is nice because there is no moving parts concerns.
Replaced same model pump. The old pump was still working but the switch broke after 10+ years of service. Can't complain.
i had a Hydromatic older style just like this one in the sump pump pit for over 20 years i really like this kind of pump. like others have said the switch would not shut off on the old one but the pump still pumps.
One lasted 12 years before the switch broke in the on position. The other is still going strong after 12 years but is being proactively replaced after the same period of time. Both are being replaced with the same pump, the DA1. A good reliable pump and a good price from Amazon.
I received the delivery in two days though I did not expedite shipping. I had to replace a 10 year old pump of the same model. The switch failed, but that's ok, the unit lasted 10 years for gosh sake. Works like a champ.
Answer: yes