Gas Leakage Alarm [DIY] LPG Detector

How to make a GAS LEAKAGE ALARM
In this video we will see how to make a Gas Leakage Alarm, In this circuit, we are using MQ2 Gas Sensor Module to detect LPG Gas and UM3561 based Sound generator.
Component required :-
1) Gas Sensor Module [MQ2]
2) Transistor
2n3906 -1
2n3904 -1
2n2222 -1
3) IC
UM3561
4) Zener Diode
3.3v
5) Resistor
470 Ω -1
120 Ω -1
220 Ω -1
1K -1
10K -1
220K -1
6) LED -2
7) Speaker 1w/2w/3w -1
8) Power Supply 5v dc
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Circuit Diagram
drive.google.com/open?id=1ds1...
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[@ritaisabel8665]

Good

[@lokkubalu5273]

How can I get this sir,I will purchase 1 piece for school purpose

[@pravinchhabra9120]

How much did it cost to make it

[@sudalemuthu8114]

I have similar type 8884570727...