For the ones that I intend to use as temperature sensors only, I am considering opening the thing up and hardwiring in a 3V power adapter instead of using batteries. Then I would be able to modify the device handler to get temperature reports every 5 minutes and not have to worry about replacing the batteries every week or two. The cost of a button on clearance and a 3V adapter comes to around $11.85, which is going to be a lot cheaper in the long run than replacing the battery. And it’s much cheaper than any dedicated Z-Wave temperature sensor that I’ve found thus far.