ESP-12FR — Ai-Thinker
ESP8266 WiFi module, 4MB flash, PCB antenna, tape & reel, 2500 pcs

Category: Module

Pricing
  LCSC         $1.00
  Mouser       $1.23
  DigiKey      $1.25
  Farnell      $1.42

Manufacturer: https://www.ai-thinker.com