Viewing panes are optically transparent to infrared radiation while maintaining a physical barrier between spaces. They allow users to remotely monitor for temperature anomalies without exposure to potentially hazardous conditions.

Inspection grills are grids of metal that provide a physical barrier between the measured item and the user that allows infrared radiation to pass through. They feature a hinged lid that seals that enclosure when measurements are not being taken to keep users safe and maintain conditions within the enclosure.