8-CH 12V ULN2003 Based Relay Board Arduino For Beginners The obstacle indicator LED on

The obstacle indicator LED on the board will light up when an object enters the sensing range

and sports

Space related equipment (NASA)

jumper wires and breadboard

Built-in 2

8-CH 12V ULN2003 Based Relay Board Arduino For Beginners The obstacle indicator LED on8 CH 12V ULN2003 Based Relay Board The 8 CH 12V Relay can control any device just like a switch contact. Its contact is isolated from the driven circuit. Features: LED Indication of Relay ON. Power Indication LED. ULN2803 Relay Driving IC. ON OFF Power Switch. Direct input from 3 5V Microcontroller for relay control. Output terminal for relay contacts. Provision of the male header for wire connection. Powered from external 12V or from the male header.