Arduino Wifi ESP8266

Question

First, do I need 2 Arduino Unos with ESP8266 module installed to communicate with each other?

I want to transmit ultrasonic value from 1 Arduino Uno to another. Thank you for answering my question.

Answer 1

There is no need of an Arduino to comunicate 2 ESP8266 modules. Maybe you can read that ultrasonic value with the ESP and send it to another or to the internet. Check this tutorial maybe will be useful.