Latest version esp-01s,comparing to ESP-01, ESP-01S will provide you stronger antenna singnal; ESP8266 can be widely used in smart grids, intelligent transportation, smart furniture, handheld devices, industrial control and other fields Applications: Home automation, sensor networks, industrial wireless control Model: Esp-01S. Compatible with Arduino. Support 3 modes: AP, STA, AP + STA. PUYA chips; 1MB Flash Memory. upgraded from 512KB，Integrated WEP, TKIP, AES, and WAPI engines. 802.11 b/g/n;

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 andlt;10uA

Integrated low power 32-bit CPU could be used as application processor

SDIO 1.1/2.0, SPI, UART

STBC, 1×1 MIMO, 2×1 MIMO

A-MPDU andamp; A-MSDU aggregation andamp; 0.4ms guard interval

Integrated RF switch, balun, 24dBm PA, DCXO, and PMU

Integrated RISC processor, on-chip memory and external memory interfaces

Integrated MAC/baseband processors

Quality of Service management

I2S interface for high fidelity audio applications

On-chip low-dropout linear regulators for all internal supplies

Proprietary spurious-free clock generation architecture

The PCB layout has changed for an improvement in WiFi radio performance.

Package Including

5pcs  * ESP8266 ESP-01S WiFi Serial Transceiver Module