ESP-12K-I — Ai-Thinker
ESP32-S2 WiFi module, 4MB flash, PCB antenna, industrial range -40..+85C

Category: Module

Pricing
  LCSC         $1.93
  Mouser       $2.48
  DigiKey      $2.49
  Farnell      $2.68

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