Ulrich| Quantity | Component name | |
| 1 | × | Sonoff TH10 ESP8266 Wifi Switch/outlet https://www.ebay.de/itm/333900880742 |
| 1 | × | UART TTL Programmer https://www.tindie.com/products/H2O2FromH2O/h2o2-usb-ch330n-33v-5v-ttl-serial-programmer/ |
67 % Gas Reduction for Warm Water with a Chat Bot
How we saved 67 % of Gas for Warmwater Heating in our 3 story appartment with a Telegram Bot and a Sonoff Wifi Socket