Location: Component box above workbench 

1  2  L  M  P  U

1

• 1N4007 - General purpose diode
• 1N4148 - General purpose diode
• 1N4735A - Zener diode 6.2V

2

• 24 to 5 DC voltage converter - 24 to 5 V DC voltage converter
• 2N3904 - NPN Transistor
• 2W10 - General rectifier

L

• L53P3C - Phototransistor
• LF0038 - Infrared reeciver

M

• Motion sensor - Motion sensor

P

• PC817 - Optocoupler

U

• ULN2003A - Seven darlington arrays; driver
• ULN2803A - Eight darlington arrays; driver