Youmile 2 pcs USB to ESP8266 Adapter Module CH340C chip with Reset Button + 2 pcs 4MB ESP-01S WiFi Serial Transceiver Module with DuPont Cable

• 【More upgrade】: This downloader is much better than red version. It use CH340C chip, added ESP8266 auto-download circuit, it is very convenient for user to download program, update firmware, debugging.
• 【Used together】: This ESP-01S prog WiFi programmer works with both ESP-01 & ESP-01s
• 【Automatic download】: No need connection, no need to press button, WiFi module will go into download mode automatically
• 【Convenience】: You don't need to unplug it & replug it in to program. Even don't have to press the reset button, it just works - programs, then resets & you can connect over serial.
• 【Support】: It support for Arduino IDE, Ai-thinker ESP8266 Flasher and Espressif FLASH_DOWNLOAD_TOOLS

Product Description USB to ESP8266 Adapter Module: Chip and automatic download: Adopting for CP2104 USB serial port chip and added ESP8266 automatic download circuit. This product is made of high quality semiconductor material, strong and durable. Application: Convenient for users to download programs, upgrade firmware, serial port debugging and other operations. Power Supply Voltage: 3.3V / 5V Easy to use: No cable required, no need to press any button, WiFi module will go into download mode automatically It support for Arduinos IDE, Ai-thinker ESP8266 Flasher and Espressif FLASH_DOWNLOAD_TOOLS 4MB ESP-01S WiFi Serial Transceiver Module: Description: Comparing to esp-01, esp-01s has these advantages: The PCB layout has changed for an improvement in WiFi radio performance 4MB Flash Memory...upgraded from 512KB Latest version esp-01s, with stronger signal Features: 802.11 b/g/n Wake up and transmit packets in <2ms 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 Integrated low power 32-bit CPU could be used as application processor Package Includes: 2 x USB to ESP8266 Adapter Module 2 x 4MB ESP-01 Serial Wireless Transceiver Module 1 x 20-pin Male and female DuPont cable