Package Included

- 1 x Upgraded(1M memory) ESP8266 ESP-01S serial WIFI wireless module transceiver

Description:

- 1MB( ESP01S) Flash Memory...upgraded from 512KB ESP01 )
- Latest version esp-01s, with a stronger signal

Feature

SDIO 2.0, SPI, UART
32-pin QFN package
Wi-Fi Direct (P2P), soft-AP
Integrated TCP/IP protocol stack
Integrated TR switch, balun, LNA, power amplifier and matching network
Integrated PLLs, regulators, DCXO and power management units
+19.5dBm output power in 802.11b mode
Power down leakage current of <10uA
SDIO 1.1/2.0, SPI, UART
STBC, 1×1 MIMO, 2×1 MIMO
A-MPDU & A-MSDU aggregation & 0.4ms guard interval
Integrated RF switch, balun, 24dBm PA, DCXO, and PMU
Integrated MAC/baseband processors
Quality of Service management
I2S interface for high fidelity audio applications

Specification:
802.11 b/g/n
Wake up and transmit packets in < 2ms
Standby power consumption of < 1.0mW (DTIM3)

Reference

- https://www.best-microcontroller-projects.com/esp-01-programming.html