DHTCU-DHT22-Battery-Voltage-Cayenne NodeMCU sends data from DHT22 (Temprature, Humidity), Voltage Sensor (A0) to Cayenne NodeMCU - ESP8266 VCC for both modules to 3.3v GND for both modules to GND DHT22 Pin to D2 Voltage Sensor 0-25v to pin A0