--- title: "Getting started with SensorZone: What size should the detection zone be?" description: Before installing SensorZone have a think about how big you need the zone to be, remember its configurable to ensure it is working appropriately on your site and to prevent nuisance alarms. --- [Skip to content](https://hello.gkdtechnologies.com/knowledge/getting-started-with-sensorzone-what-size-should-the-detection-zone-be#main-content) English Show submenu for translations [Customer portal](https://hello.gkdtechnologies.com/customer-portal?hsLang=en) ![78932.png\]](https://hello.gkdtechnologies.com/hs-fs/hubfs/78932.png?height=40&name=78932.png) Open main navigation Close main navigation - English Show submenu for translations - [Customer portal](https://hello.gkdtechnologies.com/customer-portal) - Go to gkdtechnologies.com Go to gkdtechnologies.com How can we help you? - There are no suggestions because the search field is empty. 1. [Support Center](https://hello.gkdtechnologies.com/knowledge?hsLang=en) 2. [SensorZone](https://hello.gkdtechnologies.com/knowledge/sensorzone?hsLang=en) 3. [Installing SensorZone](https://hello.gkdtechnologies.com/knowledge/sensorzone?hsLang=en#installing-sensorzone) # Getting started with SensorZone: What size should the detection zone be? ## Before installing SensorZone have a think about how big you need the zone to be, remember its configurable to ensure it is working appropriately on your site and to prevent nuisance alarms.   ![Antenna\_Bubble\_Coverage-1](https://hello.gkdtechnologies.com/hs-fs/hubfs/Antenna_Bubble_Coverage-1.png?width=205&name=Antenna_Bubble_Coverage-1.png)Remember that the detection zone or bubble is variable and has a long side and a short side (creating an elliptical shape). The long side of the detection zone can be between 3m and 10m, the shorter side from 2.5m to 8m.   Remembering that the shape of the detection zone is dictated by the position of the antenna you now need to consider what the safe working parameters are for the machine in the context of your job site. ![Excavator\_002-1](https://hello.gkdtechnologies.com/hs-fs/hubfs/Excavator_002-1.png?width=205&name=Excavator_002-1.png)If you have an excavator loading from a fixed position perhaps you only need to set the zone to the rear and side of the machine.   ![Articulated\_Dump\_Truck\_001-1](https://hello.gkdtechnologies.com/hs-fs/hubfs/Articulated_Dump_Truck_001-1.png?width=205&name=Articulated_Dump_Truck_001-1.png)If you have an ADT travelling around a site on haul roads it may only need a narrow detection zone to the sides but a wider at its blind spot to the rear of the machine.   You should also consider the speed a machine is likely to be travelling, machines moving slowly can have a smaller detection zone as the operator will require less warning of a potential incident. Please remember when positioning the antenna that the drivers tag must be detectable - if it cannot be read initialisation of the system will not be possible. If the driver’s tag is not detected the Warning LED and New Tag LED on the Operator Display will flash and beep ten times. Lastly depending on your system / method of work you may want to consider implementing SmartBubble, this allows two sizes of bubble to be set and the smaller being engaged if the hand break / deadman’s handle is activated. This encourages protocols like thumbs up and also reduces alarms when the machine is in a safe state. 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