Blue or Green? Differences Between Senso4s BASIC and Senso4s PLUS Explained Simply
Two devices, one purpose – but which solution suits your application? The Senso4s BASIC and the Senso4s PLUS by GOK enable convenient level measurement of gas cylinders via smartphone or tablet. But what exactly are the differences between the two models?
You are faced with a choice: Senso4s BASIC (blue) or Senso4s PLUS (green)? Both devices enable digital monitoring of the level of gas cylinders. While the blue version is ideally suited for use with barbecues or applications such as operating patio heaters, the green model offers additional areas of application. In this article, we will show you what the differences are, who each model is suitable for, and how to make the right decision. This way, you can avoid making the wrong purchase and choose exactly the solution that fits your needs.
What do you need a gas cylinder level indicator for?
Many users are familiar with the problem: the gas cylinder suddenly runs empty – in the middle of cooking, while heating in the motorhome or caravan, or during a barbecue with friends. Especially in applications where no gas supply indicator is available, the level often remains a mystery. This is where digital level indicators like the Senso4s BASIC and the Senso4s PLUS come into play.
They reliably measure the contents of the gas cylinder and transmit the data via Bluetooth to an app on a smartphone or tablet. This not only saves time and nerves but also increases operational safety. Particularly in camping, mobile applications or with permanently installed gas appliances, the level indicator offers a clear added value: you always know how much gas is still available – and can refill or replace in good time.

The Senso4s BASIC (blue) is suitable for stationary use, whereas the Senso4s PLUS (green) is ideal for content measurement in motorhomes.
Senso4s BASIC (blue): Functions, Benefits and Fields of Application
The Senso4s BASIC is a digital level indicator for gas cylinders that measures the weight of the cylinder and transmits the data via Bluetooth 4.0 to a free app for Android and iOS. It is particularly suitable for stationary use – for example when barbecuing, heating, or on the campsite when the gas cylinder is removed from the gas cylinder compartment. The blue version of the Senso4s is not suitable for use in vehicles.
Installation is extremely simple: the magnetic, extendable support feet adapt to cylinder diameters from 18 to 32 cm. The device is designed for all standard gas cylinders with a filling weight of e.g. 5, 8, 11 and 16 kg. Important: for an accurate measurement result, the gas cylinder must be placed on a horizontal and level surface.
The power supply is provided by three AAA batteries. The app offers a consumption forecast, a history, and automatic notifications when the level falls below a definable threshold. Multiple devices can also be managed easily via the app.
The Senso4s BASIC has protection class IP44 and is therefore protected against splashing water from all directions as well as the ingress of solid foreign objects ≥ 1 mm – an important aspect for outdoor use.
Senso4s PLUS (green): More Features for Greater Convenience
The Senso4s PLUS is also IP44-certified, allowing it to be used under typical outdoor conditions without an additional housing.
The Senso4s PLUS expands on all the functions of the BASIC model by adding extra safety and comfort features. Like the base model, it is positioned underneath the gas cylinder, measures the weight using sensors, and transmits the data via Bluetooth 4.0 to the same app.
In addition, the green version of the Senso4s has three special sensors and is ideally suited for use in vehicles such as motorhomes or caravans.
- Motion sensor: During travel in a motorhome or caravan, measurement values could be distorted. A motion sensor detects movement and pauses the measurement until the vehicle is stationary again.
- Tilt sensor: Parking on a slope, for example, would also lead to incorrect readings. The corresponding sensor detects excessive tilt and stops the measurement.
- Temperature sensor: It can sometimes become especially hot or cold in the gas cylinder compartment. In extreme temperatures, the sensor halts the measuring activity and protects the device.
The PLUS model is also powered by three AAA batteries. The operation of the support feet works the same as in the BASIC model. In addition to the level, the app also displays long-term statistics and notifications, such as low battery level or when the level falls below a defined threshold.
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The key differences at a glance
Which Senso4s suits which needs?
You want to monitor the level of the gas cylinder in the gas cylinder compartment of your recreational vehicle? And avoid the gas heater or refrigerator suddenly shutting off due to an empty gas cylinder? Then the Senso4s PLUS – the green version – is the best fit for your application.
The Senso4s PLUS is specifically designed for permanent use in motorhomes or caravans. Various sensors and ATEX certification make it possible to leave the device permanently under the gas cylinder in the compartment – even while driving.
Want to monitor a gas cylinder used to operate a gas barbecue, patio heater, outdoor kitchen gas hob or catering burner? Then the Senso4s BASIC is the best choice. If you only want to keep an eye on a stationary system, the additional sensors of the Senso4s PLUS are unnecessary, and the Senso4s BASIC is the more cost-effective option.
However: If you already have a Senso4s PLUS for your recreational vehicle, you can of course take it out of the gas cylinder compartment outside travel periods and use it, for example, to monitor a stationary LPG system on a gas barbecue.

Thanks to the extendable support feet, the devices fit perfectly on gas cylinders with 5, 8, 11 or 16 kilograms.
Conclusion: Two solutions – one goal
With the Senso4s BASIC and the Senso4s PLUS, GOK offers two level indicators tailored to different requirements. The Senso4s BASIC is ideal for stationary use, for example with gas barbecues or other gas appliances. The Senso4s PLUS, on the other hand, is particularly suitable for use in recreational vehicles, as it delivers reliable measurement results in vehicles thanks to additional sensor technology. Both devices help to monitor gas consumption efficiently and avoid unnecessary surprises. Which model is right for you depends on your specific use case.
FAQ: Frequently Asked Questions About Senso4s BASIC and PLUS
What are the differences between Senso4s BASIC and Senso4s PLUS?
The Senso4s PLUS is equipped with additional sensors for motion, tilt, and temperature. The BASIC provides the core functions for level indication via weight measurement and is intended for stationary applications only.
Can I use both devices with my smartphone?
Yes. Both models transmit the measurement data via Bluetooth to an app that can be installed on smartphones or tablets.
Can I monitor multiple gas cylinders with one app?
Yes, that’s possible without issue. However, users will need the same number of measuring devices as gas cylinders for simultaneous measurement.
How are the devices attached to the gas cylinder?
Both devices are placed underneath the gas cylinder. A horizontal, stable surface is essential.
Which cylinder types are the devices suitable for?
The Senso4s models are suitable for standard gas cylinders made of steel, aluminium or plastic with a filling weight of 5, 8, 11 or 16 kilograms. Other filling weights are also possible; the base of the gas cylinder must have a diameter between 16 and 32 cm.
Does the Senso4s app send alerts?
Yes, when a user-defined threshold for the level is undershot, a push notification is triggered. The app also issues a warning when the battery level becomes too low.
How does the Senso4s communicate with the app?
The data is transmitted via Bluetooth between the device and the app, provided the mobile device is within a range of about 20 m from the Senso4s.
Can I use the Senso4s BASIC in a recreational vehicle?
No, the blue version of the Senso4s is intended exclusively for stationary applications. It does not have sensors, which could lead to inaccurate readings while driving.
Can I use the Senso4s PLUS outside of a recreational vehicle?
Yes, that is absolutely possible for applications such as monitoring the gas cylinder used with a gas barbecue or patio heater (see areas of application for the blue Senso4s BASIC).







