Channel to monitor environmental conditions of my apartment. Channel is supplied data via an ESP8266 Wifi module which has a BME280 sensor connected to it. These are powered from a USB wall socket outlet for minimal setup/installation.
In an outhouse we have a wood pellet burner for central heating of the house combined with solar panels and a 500liter accumulation tank.
The water heater in the house need to know whether there is warm water in the tank to decide if it will heat th