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Wi-Fi module ESP8266 version ESP-01S based on the ESP8266EX chip. Has a built-in TCP/IP protocol stack and can be controlled by AT commands. Ideal for use in smart home systems in devices such as: smart plugs, all kinds of sensors, IP cameras, wearable electronics, etc.
Possible modes of operation:
as a bridge between the UART and WIFI interfaces, while the ESP8266-01S is connected to the system from a microcontroller (Arduino or other) and sends AT commands, providing control of other Wi-Fi devices
used independently without a controller, the ESP8266-01S module performs the functions of a control microcontroller
Main characteristics:
Supply voltage: 3V ~ 3.6V
Maximum working current: 220mA
Wireless support: 802.11 b/g/n
Working Frequency: 2.4GHz
Modes: P2P (client), soft-AP (access point)
Built-in TCP/IP stack
Standby consumption up to 1.0 mW (DTIM3)
Time to wake up and send packets: up to 22 ms
Number of GPIOs: 2
Protocol support: SDIO 2.0, SPI, UART
Flash memory: 1024 kb
Output power in 802.11b mode:+19.5dBm
Dimensions: 24.8 x 14.3 x 8 mm
Pin assignment:
GND: "-" module power supply
GPIO2: (Digital I/O programmable)
GPIO0: (Digital I/O programmable, also used for boot modes)
RX: UART receive
TX: UART transmission
CH_PD: (power on/off, must be brought to 3.3V directly or through a resistor)
RST: reset, must be pulled to 3.3V
VCC: "3.3V" power supply of the module
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The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
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The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
