Kathleen wrote >Now that I have had a cold frame in operation for more than a year, >with wireless outdoor thermometers, I can report on the durability >of several brands. Yes, several, due to sequential failures. > >Third was an Oregon Scientific unit. This one is still operational a >year later. It quit working for a few days midsummer, but came back >and has worked ever since. I also found the Oregon Scientific thermometer reliable and long-lasting, used in my cold frames. I bought it from an online company called "Wind and Weather", which has many useful and decorative things for the garden. Jane McGary