ESP-01 ESP8266 Serial Wi-Fi Transceiver Module | Wireless Internet IoT Board

Features:

• 802.11 b/g/n Wi-Fi protocol support
• Integrated TCP/IP protocol stack
• Serial UART interface for easy microcontoller connection
• 3.3V operating voltage
• Ideal for home automation, IoT sensors and remote control

Specification:

• Chipset: ESP8266
• Frequency: 2.4 GHz
• Power Supply: 3.3V DC
• Interface: UART (TX/RX)

Note: Requires 3.3V power supply; do not connect directly to 5V power without level shifter/regulator.