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Feature

Latest version esp-01s,comparing to ESP-01, ESP-01S will provide you stronger antenna singna;
PUYA chips; 1MB Flash Memory. upgraded from 512KBIntegrated WEP, TKIP, AES, and WAPI engines. 802.11 b/g/n;
Wake up and transmit packets in 2ms. Standby power consumption of 1.0mW (DTIM3);
Document link: https://nurdspace.nl/ESP8266;
Strong After-sales Service Team: As long as you have any questions about the product, we will resolve your issue immediately if received your email, your satisfactory purchase experience is our greatest hope! How to email us? Plz click "MakerFocus" and click "Ask a question" to email us! Looking for your consultation!

Description

4pcs ESP8266 ESP-01S WiFi Serial Transceiver Module with 1MB Flash for Arduino

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, 11 MIMO, 21 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
4 * ESP8266 ESP-01S WiFi Serial Transceiver Module