ESP8266 ESP-01S Remote Serial Port WIFI Transceiver ($6.19)

Plot twist: this deal is actually real: $6.19 (Banggood). AP / STA / AP+STA modes available., AT commands firmware. New IC ESP8266ex, 1MB (8Mbit) Flash size., Very simple AT commands / easy to use., Low-power consumption and small, Internal LWIP interface., Only four pins interface / VCC-3V3 / GND / TXD and RXD..
Updated: 01-08-2025

Banggood

Warehouse in China.
Link: ESP8266 ESP-01S Remote Serial Port WIFI Transceiver
Price: $6.19

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Aliexpress

There’re some similar (or not) items on Aliexpress
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Image	Product (link)	Price	Coupons
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.33	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.42	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$0.89	–
	1/5/10PCS ESP8266 WIFI Wireless Module ESP-01 ESP-01S IoT Remote Serial Port Wireless Transceiver Development Board Adapter 2.4G	$0.95	–
	USB to ESP8266 WIFI module ESP-01 ESP-01S Remote Serial Port WIFI Sensor Transceiver Wireless Board ESP01S Breakout PCB Adapter	$1.75	–
	ESP8266 ESP-01 ESP-01S ESP-07 ESP-12E ESP-12F ESP-12S ESP-WROOM-32 remote serial Port WIFI wireless module wireless transceiver	$2.07	–

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