What does the dongle use to detect temperature?

I fear you may both be wrong. This device contains a temperature sensor built in. It can also display the temp from the victron sensor when connected appropriately.

why would I buy a victron product if I need an $80 serial cable to communicate with it?

You don't need an $80 serial cable, the Bluetooth device is what costs money. It uses an ethernet cable.

Will this allow me to upgrade firmware in my multiplus via my phone cellular data?

No. To upgrade and make critical settings you must plug into you PC. I think this is done for safety reasons.

Can I have this plugged in and use at the same time as the digital muilticontrol panel? Or is it one or the other?

I also have the Digital Multi Control 200/200A GX installed and the DMC takes over power on/off control. The Victron Connect app accessing the BT Smart Dongle still works, however with many reduced features. Mostly just the Overview screen in Victron Connect and the Details view is limited. It actually displays in Victron Connect the message "VE Bus Smart Dongle is running in secondary mode because there is a remote control panel connected to the VE bus. In secondary mode only a limited number of values are available"

VE.Bus Smart Dongle (Bluetooth)

Product ID: 107234124

Details

Color
Blue
Brand
Victron Energy
Product Dimensions
3.94"L x x
Material
Plastic
Item Weight
3.2 ounces

📱VictronConnect app integration

🔋Bluetooth-enabled inverter control

🌡️Voltage & temperature sensing

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AED 498

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Description

📲 Power up your control game—anywhere, anytime!

SEAMLESS BLUETOOTH CONTROL - Operate your Victron inverter/charger remotely with ease via Bluetooth.
COMPACT LIGHTWEIGHT DESIGN - Sleek 3.94" x 1.18" x 2.36" dongle fits discreetly anywhere.
EFFORTLESS SYSTEM MANAGEMENT - Switch modes and adjust input current limits directly from your phone.
PERFECT FOR MOBILE POWER SETUPS - Ideal for caravans, yachts, and motorhomes where space and simplicity matter.
SMART VOLTAGE TEMPERATURE MONITORING - Keep your system optimized and safe with real-time sensing.

The Victron Energy VE.Bus Smart Dongle (Bluetooth) is a compact, lightweight device that transforms your Victron inverter/charger into a smart, remotely controllable system. Compatible with a wide range of Victron products, it enables Bluetooth monitoring and control via the VictronConnect app, while also providing essential voltage and temperature sensing. Perfect for mobile and compact power setups, it offers professional-grade convenience without the bulk of larger control units.

Specifications

ASIN	B07FCV43LQ
Best Sellers Rank	#56,781 in Automotive ( See Top 100 in Automotive ) #215 in Power Inverters
Brand	Victron Energy
Brand Name	Victron Energy
Color	Blue
Customer Reviews	4.7 out of 5 stars 436 Reviews
Display Type	No display
Included Components	Victron Energy VE.Bus Smart Dongle (Bluetooth)
Item Dimensions L x W x H	3.94"L x 1.18"W x 2.36"H
Item Type Name	Victron Energy VE.Bus Smart Dongle (Bluetooth)
Item Weight	3.2 ounces
Manufacturer	Victron Energy
Material	Plastic
Material Type	Plastic
Product Dimensions	3.94"L x 1.18"W x 2.36"H
Unit Count	1.00 Pack
Warranty Description	Warranty

Reviews

J**D

Works great!

Turn the screws backwards first. Don't be an idiot like me who stripped then broke the screw by turning it the wrong way. Product works great.

26.08.2025

P**1

Very Convenient!

Very convenient device! Since my multiplus 2 is mounted in such a way that it makes reaching the switch on it difficult I decided to buy this. Super easy to turn it off and on from my phone. My GX device while nice makes you dig through menus to get to that page. Super nice and definitely worth it. Especially if you’re like me and your multiplus is not in the most convenient location.

1.05.2025

M**S

Inexpensive way to monitor MultiPlus II

I added the Victron MultiPlus II and a LiFePO4 Lithium Battery to my RV and wanted a easy way to monitor the MultiPlus II that was less expensive than their GX system. This smart dongle allows me to easily monitor the MultiPlus II and change the input limit from my smart phone. It was super easy to install only requiring a 12v connection and a cat-5 or better ethernet cable, and the smart phone app was free. For the price, Victron should have built this into the MultiPlus II, but since they didn't, get this adaptor!

31.08.2023

B**Y

Works flawlessly

Necessary to program Victron Multiplus inverter/charger. It's a Victron so quality is impressive as usual.

1.04.2025

R**S

Buy it, it works!

Does what it says! Nice to view the information and make changes on my phone or tablet.

1.06.2025

L**.

Great product.

The Bluetooth only connects for about 30 ft. This is great to adjust the power inputs from 30 down to where you don't pop breakers. At my house I plug my camper into a plug on the side of the house, only a 20 amp plug with gfci. I'm using this to monitor, adjust power inputs depending on where we plug in and turn on and off. We'll done victron. Perfect for monitoring my camper on the side of the house. Wish it had a setting to make the Bluetooth work from longer distance. I purchase the plug in dongle to change the setting that were not accessible using the Bluetooth. Needing both dongles was a surprise. Overall all my victron equipment is awesome.

31.12.2024

G**A

VICTRON EQUIPMENT IS GREAT

I was installing a solar/inverter system in my RV and choose this bluetooth device as the way to control my Multiplus inverter. There are other options, but This did what I needed, and didn't require a display inside the RV. Blutooth paired easliy, Instructions are easy. IF you need one, You need one.

21.06.2023

W**L

Smart dongle

If you have the correct inverter you won't need this device just FYI

17.03.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

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2 months ago

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