The practicality of intelligent security products ultimately has to be tested through actual use. Recently, a journalist conducted a one-week field test of the JYM39WIFI smart peephole camera, experiencing it from multiple perspectives such as daily use and handling of special scenarios. The test revealed that this product is ingeniously designed in its details, truly achieving the qualities of being “easy to use, durable, and practical.” In everyday scenarios, the JYM39WIFI’s sensitivity in detecting visitors is outstanding. During the test, when the tester moved within a range of 1-5 meters from the door, the device responded quickly and sent out an alert within no more than 3 seconds; when the person stopped moving or left, the device automatically returned to standby mode, effectively preventing false alarms. The high-definition image quality of 3 megapixels allows for clear capture of visitors’ facial features during the day, and when the night vision function is activated at night, it can accurately distinguish the outline and movements of people, with no noise or ghosting in the images. The ease of installation exceeded expectations. The tester used a standard household security door (70mm thick with a peephole diameter of 25mm), and the entire process took only 8 minutes, without the need for drilling or welding, using the included installation tools. The product can also be perfectly adapted to older doors that are 110mm thick or special peepholes with a diameter of 50mm, thanks to the accompanying adapters, demonstrating strong compatibility. In terms of battery life, during the test, with an average of 10 detection recordings per day, each lasting 10 seconds, the JYM39WIFI still had 65% of its battery remaining after 5 consecutive days of use. With this level of usage, a single charge can last for about 15 days, eliminating the need for frequent charging. When the battery level is too low, the mobile app sends a low-battery alert to remind the user to charge in time, preventing any security gaps due to a power outage. “With the traditional peephole, I was always worried about my child being alone at home and encountering strangers. Now with the JYM39WIFI, I can monitor the situation outside at any time, and it even alerts me when someone arrives. The voice-changing function is particularly useful; it really makes me feel much more at ease,” said Ms. Li, who participated in the test and lives alone. Currently, the product is available for sale on major e-commerce platforms and in physical security stores. Special discount packages are also offered for both home and business users, further enhancing the product’s cost-effectiveness.