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Beware of poor quality monitoring power supply in the security market
At present, the competition in the security market has become increasingly fierce, and price warfare has become the most important means of competition. Some bad businessmen cut corners and used counterfeit products to deceive consumers. This situation also appears in the security monitoring power market. The common poor quality security monitoring power supply, one is the use of recycled waste electronic components produced, the other is cutting corners, in the material on the shrinkage.
The main hazards of these poor quality security monitoring power supplies include the following:
1, power scalar
This is the most common phenomenon. Currently on the market a lot of 2A security monitoring power supply, the actual output is only about 1A or even lower!
Part of the security monitoring power supply uses inferior components or disassembled parts and other unqualified components. After a period of use, the output power is significantly reduced!
Effects on the camera: The camera's image produces jitter, no color, or no image, and the night vision effect is poor. Seriously, it can't even start the camera. In this case, the actual output value of the power supply can be found by measuring the voltage value and current value at the power supply interface when the camera is loaded.
2. Insufficient protective measures
A lot of poor quality security monitoring power supply, not according to the normal power supply design, using overload protection design, and even save the fuse.
Bad effects: The camera is burned. In extreme cases, the power supply may smoke or even catch fire.
3, filtering is not clean, serious interference with the image
At present, the low-cost and unreasonable security monitoring power supply on the market has basically no common mode inductance or filter. In this way, profiteers can reduce costs and gain profit.
The bad effect on the monitoring effect: Ripple interference on the monitoring screen, especially in poor lighting conditions (such as night).
4, the input line, output line failed
The input and output wires of the power supply are too thin, and even inferior materials such as ladle aluminum are used.
Bad effect: Insufficient output power after a period of use. Cable sheath cracking, especially in winter. Broken input and output cables. Affect the surveillance camera to work properly.
5, the power supply housing uses inferior plastic
The power supply enclosure is an important protection for the power supply, avoiding external power damage or electric shock accidents. Some unscrupulous merchants produce cheap and inferior plastic shells for security monitoring. After being used for a long time or placed in an outdoor environment, discoloration and shell cracking may occur.
Hazard: If the power supply is flooded, the power supply will be damaged, and the surveillance camera will be burned out. Even the electric shock may cause personal injury.
With poor quality power supply, there are various potential unnecessary risk failures. Some of the poor quality power supply did not have obvious problems in its early use, but it was prone to various failures after being used for a period of time, causing the above-mentioned damage to the monitoring system, and causing unnecessary economic loss or reputation loss to the purchaser.
Even if some of the unscrupulous merchants provide warranty and replacement services, their warranty service targets are limited to the power supply. They do not bear any responsibility for the incidental economic losses caused by the inferior power supply (such as burning out surveillance cameras). Therefore, we recommend that you buy security monitoring power supply, be sure to keep your eyes open, do not be deceived by low prices, be sure to see the security monitoring and control power supply circuit design, quality of materials.