OPT service and delivery was very good. Unit performed well for 7 months and then quit working. The unit was under warranty so I was going to send it back . Fortunately I reread the Astrozap description that mentioned a 5 amp fuse in the plug. I opened up the plug (probably invalidated the warranty) and found the fuse had blown. Replaced the fuse with one I had and everything works again. Astrozap should include a spare fuse with their unit and a drawing to show where it goes, cheaper then shipping to replace under warranty.
Great purchase fast delivery
fit good and work great
The answer is an emphatic yes. If you have a scope and need a controller for your Dew Pads ands eyepiece warmers, this is the answer. It has good controls and it feels good quality. Paired with the Astrozap Flexi heat shield, you are set for the cold nights.