I had the same thought – weak wifi – as soon as the local control became hit or miss. But I dropped that theory once I saw how reliable Blynk was. Your suggestion seems reasonable, tho. I’ll have to get an extender to test it and I’ll let you know the results. Thanks. Btw, the distance from router is only about 40 feet, but there are 2 walls and a floor in the path…and no secondary router or extender at the moment.