Description:

1. No need to press any button
2. The wifi module will automatically enter into download mode.
3. Low cost and low price solution for rapid prototyping.
4. Compact size, easy to embed in any product

Features:

1. Operating Voltage: 5VDC
2. USB to Serial Converter: CH340C
3. Compatible With:ESP8266 ESP-01/01S
4. Comes With Onboard Reset Switch
5. Has Female Headers for Connecting the Wifi Module.