Intrinsically Safe
When your work environment has Hazardous Areas you need to ensure that your device can be used where potentially hazardous gas or dust may be present . The Australian standard for certifying the design and the areas in which devices can be used is AS/NZS 60079.25 and is denoted by the IECEx certification.
All of the devices listed for sale have IECEx certifcation and are certified for use up to a specified Zone for safe use.