The IP55 rating indicates that the thermal imager has a high level of protection against dust and is protected against low pressure water jets from any direction. The number 5 in IP55 means that the device is protected against the ingress of dust in quantities that could interfere with its operation. A second number 5 indicates protection against low pressure water splashes. Thermal imagers with this protection are suitable for use in industrial and outdoor environments where the equipment may be exposed to dust and splashing water.