C1
Capacitance
1uF
C3
Capacitance
1uF
LED2
R2
Resistance
1KΩ
LED3
LED1
C4
Capacitance
1uF
LED4
R1
Resistance
1KΩ
C2
Capacitance
1uF
Q1
Q2
US3
U1
US2
US1
BZ2
BZ1