Hi I've recently started to monitor the temperature in our two freezers at home. The freezers are old, but they contain high-value stock (meat and fish) and I'd like to get a warning if they fail. I a

Hello I have several P100 switches, all hardware version 1.20, and all on firmware 1.4.9. They all fail to update firmware to the latest offered version, 1.5.5. I have done a factory reset and re-adde