ESP8285 ESP-M2 DT-06 Wifi to Transparent Serial Module IOT

This module provides an almost painless way to connect your project’s serial UART via Wifi, giving you control to your devices via internet from just about anywhere in the planet. You could easily build IOT devices using this module.

AP mode to access web page GUI to change easily network related parameters (e.g. SSID, password, etc)
UART transparent mode.

Supply Voltage: 4.5-6V
Logic Level: 3.3V
Baud Rate: User settable, up to 3686400 baud
Support TCP Server, TCP Client, UDP Server, UDP Client and UDP local broadcast
AT command set to check status.
OTA firmware update
Interface: RX, TX with ENable and STATE output

Pins
EN -Enable, active when left open.
VCC - +5V
GND
TXD
RXD
STATE output

Useful Links :