ESP8266 ESP-01 ESP01 Serial WiFi Wireless Adapter Module 3.3V 5V Compatible Serial Board For Arduino UNO R3 Microcontroller

Description

• Working voltage: 4.5~5.5V (On-board 3.3V LDO Regulator)
• Working current: 0-240mA
• Interface logic voltage: 3.3V / 5V compatible(On-board level shift circuit)