# Adapter module for ESP-01, ESP8266, 5V/3.3V

- Page: https://sigmanortec.ro/en/adapter-module-for-esp-01-esp8266-5v-33v
- Price: 10.14 RON
- Availability: In stock; 1-2 zile
- Reference: 33508 · EAN: 5940986046218
- Category: Mechatronics and IoT > Adapters and Converters
- Package (shipping data): 0.005 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:32 (Europe/Bucharest)

## Description

Allows quick connection of an ESP-01 ESP8266 to Arduino and other 5V logic boards, providing stable power supply through integrated 3.3V regulator and logic level conversion on the board. Operates at 4.5–5.5V DC input, supports current up to 240mA, ensures increased compatibility in IoT projects and prototyping through simple module assembly.
Adapter module for the ESP-01 WiFi board, ESP8266, with 5V power supply thanks to the presence on the board of a 3.3V voltage regulator (the operating voltage of the ESP-01), compatible with Arduino and other development boards.
The adapter is ideal when you want to connect an ESP-01 to a development board operating at a 5V logic voltage, as it also integrates a logic level converter of 3.3V.
Specifications:
Power supply voltage: 4.5 - 5.5VDC
Regulated voltage: 3.3V
Operating current: 0 - 240mA
Logic voltage: 3.3V, due to the presence on the board of a logic level converter (on-board level shift circuit)
Instructions:
Connecting the ESP-01 board