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### [![](https://hello.gkdtechnologies.com/hubfs/SensorZone_KnowledgeHub.png) SensorZone User manuals and install advice for our proximity warning system, SensorZone.](https://hello.gkdtechnologies.com/knowledge/sensorzone?hsLang=en)

### [![](https://hello.gkdtechnologies.com/hubfs/SERIES_1_RGB.png) Single function control of height, slew or load. Useful info and manuals for the Series 1 range of safety control products.](https://hello.gkdtechnologies.com/knowledge/single-function-control-of-height-slew-or-load?hsLang=en)

### [![](https://hello.gkdtechnologies.com/hubfs/SERIES_2_RGB.png) Solutions for civils and construction. Useful information about the Series 2 range of safety control products and previous construction products including the 2RCI.](https://hello.gkdtechnologies.com/knowledge/solutions-for-civils-and-construction?hsLang=en)

### [![](https://hello.gkdtechnologies.com/hubfs/SERIES_3_RGB.png) Dedicated rail solutions. Useful information, including manuals for our Series 3 range of safety control products and previous solutions the 3RCI, 3RCI+ and Space Guard.](https://hello.gkdtechnologies.com/knowledge/dedicated-rail-solutions?hsLang=en)

### [Error Messages Find out the meaning of the system error messages, along with potential solutions to the errors.](https://hello.gkdtechnologies.com/knowledge/error-messages?hsLang=en)

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