I've had my SensorPush for several years now, I use it to monitor my fridge temps when running on propane. Still works great. The only issue I have found is the replacement batteries are difficult to find and do not hold the charge as the original one did. I think the original one lasted 6-12 months and the replacements last about a month.
What brand are your replacement batteries? When I do a search for CR2477 I find Sony (most expensive) Panasonic (a little less expensive) and 'various-weird-brands' that are much cheaper.
