Is radar or infrared better for human detector lights?
Radar is more sensitive and has a longer range than infrared sensing. It can sense in all directions, and the distance is 3-7 meters. As long as there is any moving object in the straight line range, the radar light will light up. Of course, it will not light up during the day. Infrared sensing has no penetrating power, while radar sensing can penetrate doors and windows in a straight line, including metal and walls below 15 cm. If there is a moving object behind the door and window, the radar light will light up. Infrared and radar sensing cannot turn or sense through walls. The infrared sensing switch is separated from the light, and the distance must be more than 50 cm. If it is too close, if the light is on for a long time, the temperature will continue to rise, causing the infrared switch to misjudge, resulting in continuous extinguishing and lighting.
In the summer test, the infrared sensing switch of 9 yuan has similar sensing distances on the front and side. The light will light up when it is close to 2.5 meters. The infrared switch of 17 yuan lights up at 5 meters from the front and 3 meters from the side. The lower the ambient temperature, the farther the infrared sensing distance.
To sum up, if you need fast response and long distance, use radar induction lights. If you don’t need too sensitive induction and long distance, then consider infrared induction lights. Voice-controlled lights are not recommended because the noise may affect others. If you want the sensing distance, lighting duration, and sensitivity to be adjustable, use a radar induction switch with adjustment function, and install the radar switch and LED light separately. Infrared adjustable switches are not recommended because it is common to adjust to a darker position, but the environment is not very dark and it can be seen clearly, it will still light up. However, the induction switch and lamp holder combined together feel good to use, and the switch and lamp holder are separated, and the experience is not good. After several months of follow-up use, it is found that the induction and lamp holder are integrated, and the failure rate is also low. Of course, this is also related to the production quality of different manufacturers. The induction and lamp holder are separated, and it feels not very easy to use, and the sensitivity seems to become dull later. Radar induction has a high failure rate and is not as stable as infrared induction.
