I had a big scare recently with a thermostat malfunction so I was wondering if anyone knows of any devices that could operate as a thermometer and also set off an alarm or send me a text message if temperatures in my BP's tub get either too high or low (although mostly too high is my concern). Or if there is something independent from a thermostat that can turn off the heat automatically if it detects the temperature getting too high. I know that sounds like it would be redundant but this is a risk I don't even want to exist in the future because things could have turned out so bad if I hadn't noticed early.