ESP8266 ESP-01S 4MB Serial WIFI Wireless Transceiver Module

Feature:
This is WiFi serial transceiver module, based on ESP8266 SoC.
The SOC has Integrated TCP/IP protocol stack.
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.
Spec:
802.11 b/g/n
LWIP agreement
Support 3 modes: AP, STA, AP + STA
Perfect and simple AT commands
4MB Flash: XMC0H32BHIG/XM25QH32CJIG by random

CH340G Programmer USB to ESP8266 ESP-01s Wifi Adapter Module

Features:
USB to ESP-01S Programmer Module has CH340G USB to TTL driver IC onboard, so you can easily use your computer to do ESP-01 functional debugging
ESP-01 serial wifi module can be directly plugged into the yellow pin header without any connection wires
Spec
Working voltage: 4.5V - 5.5V (On-board 3.3v LDO Regulator)
Working current: 300mA(LDO regulator can supply)
Selectable working mode: On-board toggle switch. UART side for serial TTL debugging by AT commands, PROG for firmware programming
USB to serial TTL chip: CH340G
Logic level: 3.3V

Applications: Home automation, sensor networks, industrial wireless control

Package Included:
1 X ESP8266 ESP-01S 4MB WIFI Module
1 X USB to ESP8266 ESP-01 Programmmer Module