1- Three-phase energy monitoring with ESPHome

3 x voltage transformers – one for each phase (2000/100mA)
3x 220Ω als burden resistor. Es wird bis maximum 28A reichen.

2- Gas pulse counter

Reed-Kontakt
A gas meter is usually very easy to read. A simple reed contact is sufficient for most gas meters.

3- Umgebungstemperatur

NTC z.B. 10kΩ with 10kΩ resistence
2x 10kΩ für Spannungsteiler + 10µf

4- RF-Receiver and Buzzer

433MHz TX RX Receiver Superhet RF Modules

All together with an ESP32 S2 Mini v1.0.0

ESPHome is used for programming and for creating the *.yaml file.

For more information please visit 3-phase-energy-monitoring-with-esphome