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    8-channel relay module for controlling multiple electronic devices
    5V 8-Channel Arduino Relay Module Board
    1 X  780 =  780
    AC-DC power supply adapter 12V 2A for Arduino, LED strips, routers, and electronics
    AC-DC Power Supply Adapter 12V 2A
    1 X  300 =  300
    7402 quad 2-input NOR gate IC in DIP package, digital logic IC for performing NOR operations in combinational circuits.
    7402 Quad 2-Input NOR Gate IC (DIP)
    1 X  40 =  40
    TCRT5000 IR Sensor Line Tracking Module for Robotics and Arduino
    TCRT5000 IR Sensor Line Tracking Module
    1 X  120 =  120