SPECIFICATIONS

Notice
Products with long pins are sent by default ("default" in the picture below), which has more stable performance. If you need products with short pins, please contact customer service and we can customize them for you.

ESP-01S ESP8266 WiFi Wireless Serial Transceiver Module 4MB Flash 3.3V Wi-Fi Module Compatible with Ar-duino IDE 1/2/5/10/20/100
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)
Document link: https://nurdspace.nl/ESP8266