I have a 01538HD station. It is only 2 weeks old with fresh quality batteries. Clean installation and short distance between sensors and display. I have great signal. Problem is that it completely locks up randomly. And by completely, I mean you can't do anything. Not even adjust the display brightness. Nothing responds at all. This is obviously firmware just freezing up. It will not reset. Have to pull batteries and power to get it to unfreeze and then of course you loose all your data. This isn't a case of loosing communication with the sensors. I can go pull the batteries out of the sensor and the display doesn't lock up. it just looses signal. I see several other posts on this exact same issue.