NE555 automatic water pump controller system switch on off relay
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1x - NE555
1x - 9V or 12v relay
3x - 10K resistor
2x - 1M resistor
2x - 1K resistor
1x - 100 NF capacitor
1x - BC547 transistor
2x - LED - 3mm
1x - Water pump motor 12V