ESP-01 Adapter 3.3V 5V

Don't send 5 V signals to your ESP8266. The use of an ESP8266 with Arduino requires logic level translation of the UART signal, as provided by this easy 3.3 V - 5 V adapter. It makes the ESP-01 ESP8266 WiFi module (150445-91) the easiest WiFi transceiver for your Arduino (5 V).

• Adapter module for ESP-01 Wi-Fi module
• 3.3 V voltage regulator circuit & onboard level conversion for easy use of 5 V microcontroller with ESP-01 Wi-Fi module
• Compatible with Uno R3
• 4.5 ~ 5.5 V (on-board 3.3 V LDO Regulator)
• Interface logic voltage: 3.3 V / 5 V compatible (on-board level shift)
• Current: 0 - 240 mA