Interference condition, Electromagnetic compatibility is appliances must pass the project, however, this project is very complicated, the LED light users buy a look at the package whether have through the national flag of electromagnetic compatibility test, 2 it is to take a medium short wave radio, when the lamp is working, turn the radio on nearby, radio to medium short wave radio station in the lower noise, electromagnetic compatibility of the measured light is better.
3421AGG 7-segment
3421AGG LED
3421BGG Display
3421BGG