1.RELAY MODULE: An on board mature stable ESP12F WiFi module with 4M Byte Flash large capacity, has high working efficiency. 2.SUPPORTING PROGRAM: Supporting for various development tools, can offer offer you reference program under development environment. 3.APPLICATION: Suits perfectly for ESP8266 secondary development learning, smart home wireless control, intelligent control, etc. 4.FUNCTION: This relay module is flexibly applied for wireless control relay on and off, and the development of embedded system. 5.EASIER USING: The I/O port of the WiFi module and the UART program download port are all led out for secondary development. Item Type: Relay Module Material: Printed Circuit Board Working Voltage: DC 24V Relay Module Specification: 10A Relay Module Channel: 16 Channel Function: Used for wireless control relay on and off, and the development of embedded system. Applicable Scenarios: Suitable for ESP8266 secondary development learning, smart home wireless control and other occasions. 1 x Relay Module 3 x Pin Header 1 x Pin Seat