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Edwin Chen 7.1 1 **~ Table of Contents:**
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3 {{toc/}}
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Edwin Chen 6.1 5 = Overview =
Edwin Chen 4.1 6
7 This URL introduce different methods to detect the water / liquid level.
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Edwin Chen 8.1 10 = Flow switch =
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Edwin Chen 6.1 12 == How it works ==
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Edwin Chen 4.1 14 Below is an example of flow switch. and product link:
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16 [[https:~~/~~/www.amazon.com/Float-Switch-Septic-System-Sump/dp/B0064BHEVM/ref=sr_1_5?crid=2PCMSD63FBP42&keywords=float%2Bswitch&qid=1671230997&refinements=p_72%3A1248909011&rnid=1248907011&s=hi&sprefix=float%2Bswitch%2Caps%2C155&sr=1-5&th=1 >>https://www.amazon.com/Float-Switch-Septic-System-Sump/dp/B0064BHEVM/ref=sr_1_5?crid=2PCMSD63FBP42&keywords=float%2Bswitch&qid=1671230997&refinements=p_72%3A1248909011&rnid=1248907011&s=hi&sprefix=float%2Bswitch%2Caps%2C155&sr=1-5&th=1]]
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18 [[image:image-20221217164157-1.png||height="329" width="486"]]
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Edwin Chen 5.1 20 [[image:image-20221217164432-3.png||height="282" width="501"]][[image:image-20221217164337-2.png||height="279" width="431"]]
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Edwin Chen 5.1 22 The switch will switch on/off to show if the water / liquid has dedicate level.
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25 To use such switch with Dragino Products, use can connect it to LSN50v2 use the same way as a door switch. See reference link:
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27 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.5DigitalInterrupt >>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/#H2.4.5DigitalInterrupt]]
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Edwin Chen 6.1 30 == Advantage & Disadvantage ==
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32 **Advantage** : Reliable , Easy to install & Immue to different environment.
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34 **Disadvantage**: Only be able to detect one speicify level. Not able to detect full range of water.
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Edwin Chen 5.1 39
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