DWM-ESP8266 ESP-07 Serial to WIFI wireless transceiver module
Amazon.co.jp: ESP-01 wifi Walkie Talkie Radio Module with Adapter Module for Rumpy Geekcreit R ESP8266 - : DIY, Tools & Garden
Esp32 Walkie talkie no wifi required - YouTube
ESP8266 NodeMCU Development Board 0.96 Inch OLED Display,CH-340,ESP-12E WiFi Module,Micro USB for Arduino/Micropython ESP8266 - AliExpress
Wi-Fi Walkie Talkies! - Hackster.io
ESP8266 walkie talkie – Essential scrap
WT8266-S2 ESP8266 Wi-Fi network control module With IPEX connector
ESP-12F ESP8266 Development Board Support OTA Launch Wifi Development Board for Arduino Compatible with WeMos D1 Mini - AliExpress
SOCORAD32: A hackable, open source, ESP32 amateur radio board with walkie- talkie functionality and data communication - Open Electronics - Open Electronics
ESPboy Turned Into Functional Walkie-Talkie | Hackaday
DWM-ESP-12E ESP8266 Serial Wi-Fi Wireless Transceiver Module for Arduino / RPi Built-in Antenna
Amazon.co.jp: ESP-01 wifi Walkie Talkie Radio Module with Adapter Module for Rumpy Geekcreit R ESP8266 - : DIY, Tools & Garden
New ESP32 Amateur Radio Board with Walkie-Talkie Functionality and Data Communication
Long Range Arduino Based Walkie Talkie using nRF24L01