First, the owner can test the quality of the product through several simple experiments.One is the distance test, which USES a ruler to measure the distance between the car tail and the obstacle, and whether it is consistent with the data displayed by the reversing radar;One is waterproof test, get some mineral water, if the condition is good can turn on the tap, water to flush probe, from this test can understand product waterproof performance, because it will be rainy days when reversing safety;One is the effective range of the test probe. The owner can pass the obstacle through the test range of the probe from different angles. The Angle of the normal test range of a probe is 90 degrees.
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