As the circuit is very simple. You can connect the sensor and relay module to NodeMCU as shown in the circuit diagram. The IR Receiver is connected to D1 pin of NodeMCU. PZEM-004T can be connected to ...

Smart Home Automation Using ALEXA and GOOGLE ASSISTANT with NODE MCU ESP8266 MODULE. ... -Relays are important part of any electrical and electronic circuits. We use relays in control ... Relays are ...