ESP8266 ESP-01 Serial WiFi Wireless Adapter Module

A adapter module for ESP-01 Wi-Fi module. 3.3V voltage regulator circuit and onboard level conversion circuit can make 5V microcontroller easy to use with ESP-01 Wi-Fi module.
Also, the item can be used with For Arduino UNO R3 or compatible board.

Features:

Working voltage: 4.5~5.5V (On-board 3.3V LDO Regulator)

Working current: 0-240mA