1 piece ESP8266 ESP-01S Wireless Module Wifi Sensor for Arduino ESP-01 Advanced Version

   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
    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 & A-MSDU aggregation & 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
    Integrated WEP, TKIP, AES, and WAPI engines

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

If you need ESP-01 version, please search for this link:

https://www.aliexpress.com/item/10pcs-lot-2015-New-version-ESP8266-ESP-01-Serial-WIFI-Wireless-Module/32634717018.html?

Use example

shipping list：

ESP-01S*1