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Proximity Warning System

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Introducing SensorZone

Technology proven to reduce collisions between people and machines.

SensorZone Proximity Warning System

SensorZone is a robust, high-quality Proximity Warning System with a proven track record for improving safety in the workplace. This modular, easy fit system creates a detection zone around machinery and equipment and in the event of a person entering this zone a unique, triple alert is activated.

SensorZone has been subject to multiple, widescale deployments across a range of  industries, supporting companies who are looking to drive a positive safety culture. GKD Technologies has focused the development on maintaining the systems simplicity of use, operation and maintenance. This approach promotes engagement, adoption and behavioural safety change amongst workforces.

External Beacons & Internal LEDs

Visual Alerts

Using a combination of external beacons and LEDs for the operator in the cab our visual alerts are an important part of the SensorZone warning system.

In cab and external sound alarms


In cab operators will receive a distinct audible warning in the event of a potential risk, externally our optional sound alarm has a choice of over thirty-two different alerts.

Wherever you wear it

Vibration & Audible

The tag wearer will feel the tag vibrate whether it is worn on a hat, lanyard or item of clothing. It will also emit a distinctive sound alert.

Keeping People Safe, in any industry.

The system is flexible and adaptable and applicable across a broad range of machines and working environments.

What sets SensorZone apart?

Alerting the operator and the person at risk.

Let everyone be responsible for safety.

In the event of an incursion into the detection zone both the operator and worker or person at risk gets an alert.

Flexibility for all machine types and sizes.

Simply add base stations to create larger protection zones.

360-degree, configurable coverage for different machines and applications ensures consistent incident prevention across sites.

Data that drives behavioural change.

Measure, review and identify risk.

Data logging of all actions and incidents which are recorded to via cloud-based analytics, supporting the proactive management of site safety and identification of relevant training requirements, improving learner engagement.

SmartBubble & Area Shield.

An adaptable solution for any site or work place.

Reduction in nuisance alarms, that lead to operator fatigue is easily achieved using SmartBubble, which uses sensors to detect travel speed or works with an excavators deadman’s leaver to reduce the size of the detection zone when it is safe to do so. While Area Shield allows for the ring-fencing of offices, site cabins and walk ways.

Tags, part of your personal protective equipment.

Providing a personal view of safety and behaviour.

Anti-tamper tag does not need recharging, with an average battery life of 3-years. SensorZone is a proven, low maintenance design with millions of man hours protecting workforces across the global minimises cost of ownership and maximises peace-of-mind.

Simple set up and installation.

A solution that is easily adopted.

SensorZone is consistently recognised for its simplicity and how quickly teams engage with the system. Relative to other systems the system is quick and simple to install, reducing downtime and keeping your site working.

Supporting your work place practises.

Designed with best practise in mind.

SensorZone can be used to support existing working practises or site behaviours, for example People Plant Interface protocols including Red Zone Training.

A complete safety system.

SensorZone Components

SensorZone is a complete system, comprising all of the following components to ensure that all people, assets and machinery are monitored and protected.


- No recharging required, minimum three-year operational battery life.
- Flexible wearing options, hard hat, hi-vis, lanyard.
- Audio and vibration alerts ensure effectiveness in all working environments
- Tamperproof design that works wherever your team does.

Base Station

- Generates the configurable detection zones around any vehicle or machine.
- WiFi configuration enables fast set-up and download of daily log files.
- Datalogging for all activity and incursions into the protection zone drives safety improvements and safety culture.


- External antennas with 10m – 15m range.
- Add a second antenna for larger machines or in application where distinct zones are required, to create the most effective protection zone.
- Adaptable and flexible to ensure best location to maximise coverage.

Tag Test Unit

- Used at the beginning and end of each shift to ensure optimum safety performance
- Audio, vibration and visual feedback provides certainty that all personnel are protected.
- Keeps a record of all tests to ensure compliance, can be integrated site entry systems.
- WiFi connectivity for fast download of records, avoiding disruption to ongoing operation.


- Visual and audible feedback for operators increasing effectiveness in all environments.
- Three choices of display for consistent experience on all site machines:
1. Multi-function display: providing audible and visual alerts, as well as system configuration options for specific requirements
2. Simple Push Button: display for use on smaller machines or where no cab is present.
3. Digital display: where remote connection to a base station is required.


- SmartBubble technology automatically reduces the exclusion zone to a second predefined “safe zone”, if a machine is stationary or safety device is engaged, such as the lever lock (deadman’s handle) on an excavator.

Want to know more?

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