I placed it on my bottle as instructed.The left had bar show the colour blue all the way, does this mean the bottle is full?

I believe so. I thought first of all it didn't work, but it did change as the bottle was used.

is this magnetic gas level indicator suitable for 15kg butane calor gas cylinder and does it work!

Yep, it would be suitable for all cylinders except that is is extremely unreliable. I think it works on the difference in temperature of cold liquid gas Vs evaporated gas (?) therefor you need to place then magnetic strip in the right place to determine where the liquid level is - I wouldn't buy another!

how do you read the level from the matrix of squares that are a variety of colours?

I bought one of these a couple of years ago. They are far from accurate! I believe the scale on the left should indicate the liquid level of gas in the bottle. I think it works on the priciple that the evaporating gas is cooler than the gas liquid level, so the liquid gas indicates red (warm) and the interface between the liquid and the gas is blue (colder). The trick is knowing where to put the magnetic patch in the first place......it wasn't worth the money in my view.

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Magnetic Gas Level Indicator

Product ID: 51935567

⛽Compatible with Butane & Propane cylinders

🧲Magnetic attachment for effortless setup

♻️Reusable design for sustainable use

40804 ₮

Duties & taxes included

In stock

Sold byAmazon MongoliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mongolia.

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Description

🧲 Know your gas, own your moment.

COMPACT LIGHTWEIGHT - Sleek design at just 70g fits discreetly on any cylinder.
ECO FRIENDLY REUSABLE - Reduce waste with a durable indicator designed for repeated use.
INSTANT GAS LEVEL AWARENESS - Stay ahead of your fuel needs and never run out unexpectedly.
EFFORTLESS MAGNETIC MOUNTING - Simply attach to your gas cylinder—no tools needed, no hassle.
UNIVERSAL FUEL COMPATIBILITY - Works seamlessly with both Butane and Propane tanks for versatile use.

The Magnetic Gas Level Indicator is a lightweight, reusable device that magnetically attaches to Butane and Propane cylinders, providing a quick visual gauge of your gas level. Designed for convenience and sustainability, it helps professionals and outdoor enthusiasts avoid unexpected fuel shortages with a simple, tool-free setup.

Specifications

ASIN	B0030EU7KQ
Best Sellers Rank	54,433 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 108 in Camping Replacement Fuel
Customer Reviews	3.9 3.9 out of 5 stars (260)
Date First Available	10 Dec. 2009
Item display weight	200 g
Manufacturer	THD
Material type	Butane
Package Dimensions	19.7 x 10.4 x 0.2 cm; 70 g

Reviews

L**.

Hubbies gift

Struggled to read it

5.09.2024

A**A

Gas level Indicator

We do not have great faith in the product as it seems a little vague/unreliable but this may be clarified with use and time. It seems to be a general observation of the product as we purchased a few. Prompt and efficient process and delivery of order though - very good in that respect.

22.05.2014

D**K

Easy to use

Easy to use and effective

10.10.2019

E**R

Ideal for caravanning

I like it and does the job, A bit slow in working, but you get there in the end

3.08.2018

M**T

Does not work

Not able to get it to work, shows the bottle as empty. It’s a brand new gas bottle.

13.07.2021

A**R

Does not work

Waste of money

9.08.2022

J**K

As described

Arrived on time description was accurate packaged well .

27.04.2024

W**E

Prompt service and delivery.

Very easy to use. Clear visual indication. So satisfied I have now orde ed another two for my mobile .

11.11.2020

P**M

لايفيد ولايوضح اي شي

6.08.2022

A**F

Useless

1.10.2024

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TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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2 months ago

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40804 ₮

Duties & taxes included

In stock

Sold byAmazon MongoliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mongolia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews