ESP8266 WIFI 4CH Relay Module 12V + ESP8266

ESP8266 WIFI 4CH Relay Module 12V + ESP8266

The ESP8266 is the name of a micro controller designed by Espressif Systems. The
ESP8266 itself is a self-contained WiFi networking solution offering as a bridge from
existing micro controller to WiFi and is also capable of running self-contained applications.

Interface and sources:

• IN+, IN-: 5V power input
• TX, RX: UART communication
• SWIM, NRST: MCU program interface
• S1: Mode selection key, default is mode 1
• S2: Restore key
• LED D2 and D4(red): Relay indicator
• LED D7(red): Mode 1 indicator
• LED D5(blue): Mode 2 indicator
• LED D6(green): Working state indicator, the description of D6 as below:
  • (1) It means internal self-configuration or lost connection with the router when D6 off
  • (2) It means the ESP-01 is waiting for the APP configure the password for it when D6 fast blinks every 0.5S
  • (3) It means the whole configuration is done and waiting to establish TCP connection with APP when D6 slow blinks every 2S
  • (4) It means the TCP connection between ESP-01 and APP is OK when D6 is on all the time.
• Relay control command(must be in hex format):
  • Open the first relay: A0 01 01 A2
  • Close the first Relay: A0 01 00 A1
  •  Open the second relay: A0 02 01 A3
  • Close the second Relay: A0 02 00 A2

Package Includes:

• 1x ESP8266 WIFI 4CH Relay Module 12V + ESP8266

Relate Products:

• Sensors | Modules