> For the complete documentation index, see [llms.txt](https://docs.twtg.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.twtg.io/docs/installation-and-provisioning/installation/contact-sensor-vs-cs.md).

# Contact Sensor (VS-CS)

{% hint style="danger" %}
The user must read the [product documentation](https://github.com/TWTG-R-D-B-V/neon-product-documentation/blob/main/VS-CS/Installation%20%26%20Use/NEON-CS_User-Manual_VS-XXX-01-CSXX_4001_A5.pdf) before proceeding with the information provided in this section. 
{% endhint %}

The NEON Contact Sensor detects if the magnetic probe is in close proximity to the sensor. This consists of two parts: the sensor and the sensor magnet. 

The sensor can be installed using the mounting holes of the sensor's bracket or using a band clamp. The user can install the sensor using the mounting holes by placing the bracket against a flat and earthed surface and using the screw holes or slots (designed for M6 fasteners) to fix it in place. 

<figure><img src="/files/T9YYltcqsEBj3M0iTtQO" alt=""><figcaption><p>Mounting holes bracket</p></figcaption></figure>

The user can also mount the sensor using a band clamp. Please note that in this case the bracket must be earthed as well.&#x20;

<figure><img src="/files/BiXyvqZps7L4rfmUzdwn" alt=""><figcaption><p>Installation using a band clamp</p></figcaption></figure>

Additionally, the sensor magnet can be installed by placing it against a flat surface and using the screw holes or slots (designed for M5 fasteners) to fix it in place. The sensor magnet must be placed at a maximum distance of 25 mm away from the top part of the sensor. Please refer to the following images for reference.&#x20;

<figure><img src="/files/KFBKaIEpIQqftrFoQvJ8" alt=""><figcaption><p>Schematics of the sensor magnet's position</p></figcaption></figure>

<figure><img src="/files/oahaaxT2kwEdywrmysGW" alt="" width="375"><figcaption><p>Example of a mounted NEON Contact Sensor</p></figcaption></figure>


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