You can flash this to your esp8266 (with nodemcu on it), change the pin numbers correspondingly, and it should work.
It has a relay attached to it that switches a lot on/off depending on the voltage, as well as a temperature sensor connected to the ADC (analog-digital converter) pin, which is used to handle motion detection using a sonar sensor. You can modify the code according to whatever hardware you have.
The main useful thing here is the code for getting reliable sonar readings.
