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ESP-01S ESP8266 SPI Wi-Fi Wireless Module With ESP-01 Adapter

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    This is WiFi serial transceiver module, based on ESP8266 SoC which has integrated TCP/IP protocol stack.
    It optimizes the filter circuit and reduces power consumption. It is compatible with ESP-01 and it is an upgraded and improved version of ESP-01 module.
    It is TTL serial communication interface and its parameters can be set by AT command. It is widely used in networking, smart home project when it is connected to the wifi router. It can be used for remote monitoring of home appliances, bedroom temperature and humidity, and controlling home appliances by the mobile phone.
    With the help of ESP-01 Adapter module, it can be connected directly with the Arduino board and other 5V MCU development board.
1>.Work Voltage:DC 5V
3>.Work Temperature:-40℃~85℃
4>.Work Humidity:0%~95%RH
1>.Arduino UNO R3 and the compatible board can directly connect to this module.
2>.You can debug the module with the USB to TTL module, such as FT232RL, CH340G module.
3>.Interface logic voltage: 3.3V/5V compatible(On-board level shift circuit)
4>.Working frequency: 2400-2484MHz
5>.Working voltage: 4.5V-5.5V (On-board 3.3v LDO Regulator)
6>.Working current: 240mA(MAX)
7>.Serial port baud rate: 115200 (default), can be modified to other values by AT command
8>.Serial communication format: 8N1
9>.Antenna Type: Built-in PCB antenna is available. 
10>.Wireless Network Mode: station/softAP/SoftAP+station
11>.Wireless criteria: 802.11 b/g/n
12>.WIFI @ 2.4 GHz, support for WPA/WPA2 security mode
13>.It is very easy to design projects by AT command
1>.Home automation
2>.Sensor networks
3>.Industrial wireless control
4>.Smart car
1pcs ESP-01S ESP8266 WIFI Module
1pcs ESP-01 Adapter Module
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ESP-01S ESP8266 SPI Wi-Fi Wireless Module With ESP-01 Adapter