# How to connect a bluetooth water meter to victron using Venus OS Large and Node Red

**URL:** <https://discourse.nodered.org/t/how-to-connect-a-bluetooth-water-meter-to-victron-using-venus-os-large-and-node-red/98911>\
**Category:** Hardware\
**Created:** [2 September 2025 11:09 UTC](https://discourse.nodered.org/t/how-to-connect-a-bluetooth-water-meter-to-victron-using-venus-os-large-and-node-red/98911 "2025-09-02T11:09:03Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![LoganT](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@LoganT](https://discourse.nodered.org/u/LoganT)\
**Post date:** [2 September 2025 11:09 UTC](https://discourse.nodered.org/t/how-to-connect-a-bluetooth-water-meter-to-victron-using-venus-os-large-and-node-red/98911/1 "2025-09-02T11:09:03Z")

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Hi Team, I have a victron system running Venus OS Large and therefore Node Red on my Cerbro GX.

I have this old **Topargee Bluetooth Water Tank Gauge called an eflow.** Since it is bluetooth I was wondering if I can connect it to my Victron system using a ‘virtual device’ node.

I got the node working, but I can’t figure out how to connect to the Bluetooth device.  
I know my device's MAC address, but I don’t know which node to use to connect.

I have tried a few community Bluetooth nodes, but sometimes they don’t install or create lots of ‘deprecated warnings’.

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/3/e37a4cb6a0c9e159ea6e020ee194403552949d8b.png)

Screenshot above is using the community nodes ‘node-red-contrib-victron-ble’ but doesnt seem to do anything ☹

Any help would be greatly appreciated!

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [2 September 2025 13:46 UTC](https://discourse.nodered.org/t/how-to-connect-a-bluetooth-water-meter-to-victron-using-venus-os-large-and-node-red/98911/2 "2025-09-02T13:46:22Z")

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Are you certain the **Topargee Bluetooth Water Tank Gauge** is BLE compatible? It might be regular Bluetooth!

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**Author:** ![LoganT](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@LoganT](https://discourse.nodered.org/u/LoganT)\
**Post date:** [3 September 2025 09:04 UTC](https://discourse.nodered.org/t/how-to-connect-a-bluetooth-water-meter-to-victron-using-venus-os-large-and-node-red/98911/3 "2025-09-03T09:04:58Z")

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I am not sure.

- Any idea how to check?
- And what are the implications either way

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [2 December 2025 09:05 UTC](https://discourse.nodered.org/t/how-to-connect-a-bluetooth-water-meter-to-victron-using-venus-os-large-and-node-red/98911/4 "2025-12-02T09:05:50Z")

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