This document provides a bill of materials for a water level buzzer circuit. The circuit includes components like a buzzer, LED, sensor PCB, resistors, capacitors and transistors that operate to trigger the buzzer when water reaches the sensor level. The circuit draws 40mA from a 6V DC power supply and is a simple design to alert the user when water submerges the sensor.

1. 1
WATER LEVEL BUZZER
SR. QTY. REF. DESCRIPTION
1 1 BZ1 BUZZER
2 1 CN1 2 PCB PINS
3 1 C1 10uF/50V
4 1 C2 0.1uF
5 1 D1 RED LED
6 2 Q1,Q2 BC547
7 1 R1 100K
8 1 R2 5.6K
9 1 R3 4.7K
10 1 R4 1K
11 1 SN1 SENSOR PCB
12 1 WIRE 2 WIRES
WATERSENSORPCB
R1
100K
R2
5.6K
Q2
BC547
R3
4.7K
Q1
BC547
SN1
1
2
CN1
6VDC
C2
0.1uF
+C1
10uF/50V
R4
1K
D1
REDLED
BZ1
BUZZER
BLCK
RED
GND
+V
Water Level Buzzer is a simple circuit which will
buzz when water reaches the sensor level.
!Input supply - 9V DC @ 40mA
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