---
title: "Getting started with SensorZone: Types & sizes of machinery."
description: Before installing SensorZone it is important to consider the types and sizes of machines on your site.
---

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# Getting started with SensorZone: Types & sizes of machinery.

## Before installing SensorZone it is important to consider the types and sizes of machines on your site.

 

Will your machines require single or dual antenna fitting? Generally as a rule of thumb we would suggest machines up to 20T will have a single antenna, anything above will require two. The exception to this rule maybe something like an ADT because of the articulation point, it is advisable to include a detection zone around both ends of the machine.

![Antenna_Bubble_Coverage-1](https://hello.gkdtechnologies.com/hs-fs/hubfs/Antenna_Bubble_Coverage-1.png?width=258&name=Antenna_Bubble_Coverage-1.png)

Remember that the detection zone size is variable and has a long side and a short side, creating an elliptical shape around the machine. The position / direction that the antenna is placed impacts the shape or orientation of the the detection zone.

You can find some typical antenna placement on page 9 of the installation manual and in t[his article on our KnowledgeHub.](https://hello.gkdtechnologies.com/knowledge/where-should-i-install-the-sensorzone-antenna?hsLang=en)

If you need guidance on the size of the detection zones you need visit this [page](https://hello.gkdtechnologies.com/knowledge/getting-started-with-sensorzone-what-size-should-the-detection-zone-be?hsLang=en).

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