3
Component
Label
Value / Type / Label
Quantity
Resistors and
Potentiometer
R1
5.1
Ω
/ (Green, Brown, Black, Silver)
1
R2, R5, R6, R7, R9, R10
1KΩ
/ (Brown, Black, Black, Brown)
6
R3
10KΩ / 103 potentiometer
1
R4
10kΩ / (Brown, Black,
Black, Red)
1
R8
330Ω / (Orange, Orange, B
lack, Black)
1
R11
220kΩ / (Red, Red,
Black, Orange)
1
Light Emitting Diode
D1, D2
3mm Red LED
2
Ceramic Capacitor
C1, C2
104 (100nF)
2
Transistors
Q1
S9012 Epitaxial Silicon PNP
1
Q2
S9013 Epitaxial Silicon NPN
1
IC Chip
U1
LM393 Dual Op Amplifier
1
PCB
----
Main PCB (Green)
1
----
Sound IC PCB (Green)
1
Modules
MQ5
MQ Sensor
1
B1
Buzzer
1
Headers
P1
4-pin Breakable Male Header
1
Bill of Materials:
This package includes 23 pieces which are listed below along with their labels and quantity.
