Thermal imaging camera KEILER-35 PRO (2020)

The second specification in a night vision device’s model number is the front lens diameter. The larger it is, the more light the night vision device collects.

Protects the night vision device from bright light accidentally entering the optics.

These devices may only be exposed to moderate moisture or light drops of water.

The visible field in meters, that can be seen from a distance of 100 meters. This information is often more easily visualised as an angular specification.