1. Look at the packaging and trademarks. The state mandates that LED lamp manufacturers mark the following on the outer packaging of their products: rated voltage, voltage range, rated power, and rated frequency.
Generally speaking, the trademarks of high-quality products have good printing quality, clear fonts, and are not easy to fall off. They can be wiped with a soft wet cloth. The marks are clear and legible and not easy to be wiped off. They have the manufacturer's trademark and related certification marks.
Fake and inferior products have poor printing quality, blurred fonts, easy erasure, and no manufacturer’s trademark and related certification marks.
2. Look at the appearance of LED lamp tubes. Real LED energy-saving lamps use three primary color tubes. The tubes are white. If you cover them with your hands, they will become whiter.
In addition, from the perspective of lamp tubes, multiple lamps can be compared together. Lamp tubes with good consistency in shape and size are mostly machine-bent and formed, and are mostly mass-produced products.
The product has good consistency, the quality is easier to ensure, and the interchangeability during maintenance is better.
Of course, there should be no cracks, looseness, or signs of prying between the interfaces.
During the installation and disassembly process, the lamp head should not be loose or tilted.
The plastic shell of the lamp must be of the engineering plastic flame retardant type.
Ordinary plastics are easily deformed and flammable, and are prohibited from being used in the production of energy-saving lamps.
The two can be easily distinguished from the surface. The latter has a smoother and glossier surface, while the former has a texture similar to frosted glass.
3. Look at the working temperature. Under normal working conditions, the temperature rise of LED energy-saving lamps should be very low.
Otherwise, the life of LED energy-saving lamps is very short.
At the same time, when the energy-saving lamp is lit, it flashes very quickly or fluctuates dazzlingly, which indicates that the energy-saving lamp has quality problems.
4. Look at the starting performance. LED energy-saving lamps have two characteristics when starting: first, the higher the temperature, the easier it is to start; second, when the light is turned off, it will not flash.
In addition, it is worth mentioning that many LED energy-saving lamps are very dim when turned on, which is detrimental to the life of the bulb. LED energy-saving lamps should have a power circuit and PCB board inside them.
5. Check the interference situation. In our country, electromagnetic compatibility is an item that electrical appliances must pass. However, the detection of this item is very complicated. When users purchase lights, they should check whether the package has passed the national electromagnetic compatibility test. The second is to bring a medium and short wave radio. When the lamp is working, place the radio nearby, and the radio should be medium and short wave. The lower the noise emitted by the radio station, the better the electromagnetic compatibility of the lamp under test.
6. Look at the workmanship of the lamp body and driver. LED products produced by large manufacturers will be much finer in lamp body workmanship than those produced by small workshops. The material of the LED driver casing is also better. Generally, large manufacturers They all use flame-retardant materials. The lamp body of the small factory's products is relatively rough, and the driver is made of ordinary plastic.