Product review (5 stars): Wonderful. Does what it says it will do
Wonderful.  Does what it says it will do.  I am thankful for reviews.  I had purchased a Honeywell one and nothing.  It did not work.  Upon reading reviews I found that Honeywells have a high failure rate.  Right out of package they don't work.
Honeywell was once a well respected name.  And I had bought that one from a Heating dealer.  Maybe a scam.  They sell a defective unit.  Then the customer calls for a service call to fix. Then large $$ labor and maybe a large $$ parts bill for a whole new control valve.

This is an easy DIY project as long as you work carefully.  Try not to remove gas line and  make sure of your connections.  This saved me hundreds of $$$.  Very good price except for delivery charge.