Therefore, in professional fields, high-and low-temperature testing serves as the first "physical fitness test" for equipment reliability. Well-established standards exist domestically and internationally for handling extreme temperatures, such as the U.S. military standard MIL-STD-810H, NATO standard AEC-TP-300, and China's military standard GJB 150A-2009, which specify testing requirements and procedures. Today, these standards are applied not only in military applications but also extend to industrial and consumer technology sectors.

Along airport runways, high-intensity noise or audiovisual bird-repellent devices—such as omnidirectional loudspeakers and directional sound-light systems—must withstand heavy rain and dust; on border patrol vehicles, powerful searchlights endure both road and exposure to mud and sandblasting winds; in emergency broadcasting scenarios, equipment may abruptly transition from scorching sunlight to torrential downpours. For devices employing intense sound, illumination, or integrated audiovisual technology—commonly deployed outdoors, in vehicles, or under extreme conditions—the IP protection rating is far more than just a parameter printed on the nameplate; it serves as a critical lifeline determining mission success.