ESP-01S WiFi Serial TTL Module (AI-Thinker, 1MB Flash)
Prices updated: 12 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 RAM Electronics | ESP-01S WiFi Serial TTL Module - Updated Version | 145 EGP | View in store |
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Lowest price recorded: 145 EGP
About this product
The ESP-01S is a compact WiFi module from AI-Thinker built on the ESP8266, with 1 MB of flash memory. It communicates with a host controller through a serial TTL (UART) interface and can be controlled with AT commands or programmed as a standalone device. It is commonly used to add WiFi connectivity to Arduino and other projects in IoT and smart device applications.
Specifications
- Brand
- AI-Thinker
- Chip
- ESP8266
- Flash memory
- 1 MB
- Interface
- UART serial TTL
- WiFi standard
- 802.11 b/g/n
- Operating voltage
- 3.3 V
Frequently asked questions
What is the price of ESP-01S WiFi Serial TTL Module (AI-Thinker, 1MB Flash) in Egypt?
ESP-01S WiFi Serial TTL Module (AI-Thinker, 1MB Flash) currently costs 145 EGP in Egypt.
Where can I buy ESP-01S WiFi Serial TTL Module (AI-Thinker, 1MB Flash) in Egypt?
ESP-01S WiFi Serial TTL Module (AI-Thinker, 1MB Flash) is available from RAM Electronics. Compare the offers above to find the best price.
How do I wire the ESP-01S to a USB-to-TTL adapter?
Connect TX to RX and RX to TX, connect GND to GND, and power VCC from a 3.3 V source, not 5 V. To enter flashing mode, pull GPIO0 to GND while resetting the module, then release GPIO0 after the upload.
Why does the module reset during upload or WiFi connection?
The ESP8266 can draw short current spikes of several hundred milliamps during WiFi transmission. Use a stable 3.3 V supply that can deliver that current and add a bulk capacitor close to the module.
