Verify the normal operation ability of the equipment in the expected high temperature environment that may occur for a short period of time. Fixed devices, mobile devices, and portable devices require different temperature points, which can be selected within the temperature range of 40 ℃, 55 ℃, and 70 ℃, with testing time ranging from 2/8/16 hours. 2. High temperature storage test: Conduct accelerated aging tests by placing the tested equipment in a high-temperature environment for a long time. Conduct a 21 day high temperature aging test at 55 ℃ based on the type of product. 3. Low temperature working test: To verify the normal operation ability of the equipment in the expected low temperature usage environment. Fixed devices, mobile devices, and portable devices require different temperature points, which can be selected within the temperature range of+5 ℃, -10 ℃, -25 ℃, and the testing time ranges from 2/8/16 hours. 4. Temperature change test: To test the ability of portable devices to operate normally when subjected to sudden temperature changes during reciprocating transportation in normal and low-temperature environments. There are three temperature ranges, selected based on the product's usage environment: (+5 ℃~+30 ℃), (-10 ℃~+30 ℃), and (-25 ℃~+30 ℃). The temperature exposure time is 1 hour each, with at least 4 cycles. 5. Constant damp heat working test: To verify the ability of the equipment to operate normally in a possible short-term high relative humidity and no water vapor condensation usage environment. Temperature+40 ℃, humidity 93% RH, testing time of 48 hours or 96 hours. 6. Constant damp heat storage test: To verify the ability of the equipment to withstand long-term humidity effects in the operating environment. Temperature+40 ℃, humidity 93% RH, testing time for 21 days. 7. Alternating humidity and heat working test: To test the adaptability of the equipment under high relative humidity and environmental conditions where condensation occurs on the product surface. Conduct at least 2 cycles of 48 hour alternating damp heat test. 8. Alternating humidity and heat storage test: To test the equipment's ability to withstand long-term high relative humidity and surface condensation. Conduct at least 6 cycles of 144 hours of alternating damp heat test. 9. Waterproof test: To test the equipment's ability to resist water erosion. The waterproof level (IPX2~IPX6) for testing can be selected based on the location of use of the equipment. 10. Salt spray cycle durability test: The test is conducted using a constant damp heat and neutral salt spray alternating method, with 22 hours of salt spray and 2 hours of constant damp heat alternating as a cycle. 11. Low temperature and low pressure test: To test the adaptability of the equipment under the combined environmental conditions of low temperature and low pressure. Temperature point (+5 ℃, -10 ℃, -25 ℃), pressure value of 70kpa, test duration of 2 hours. 12. Mechanical impact test: To verify the equipment's ability to withstand potential mechanical impacts in actual usage environments. The impact waveform is a half sine wave with a pulse width of 6ms, and the impact axis is in 6 directions, with 3 impacts in each direction. 13. Sinusoidal vibration test: frequency range 10Hz-150Hz, acceleration 5m/s2, vibration in three mutually perpendicular directions, swept 20 cycles in each direction. 14. Dust proof test: Check the ability of the special treatment shell of the equipment to prevent the entry of fine dust. Conduct a dust test on IP5X or IP6X for 8 hours. Author: Cui Gong, Shenzhen Anche Shenghui Testing Co., Ltd https://www.bilibili.com/read/cv17420359/ Source: Bilibili