ESP-32SR — Ai-Thinker
ESP32 WiFi+BLE module, 4MB flash, PCB antenna, tape & reel, 2500 pcs

Category: Module

Pricing
  LCSC         $1.90
  Mouser       $2.44
  DigiKey      $2.53
  Farnell      $2.87

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