Why is PIR motion sensor light so popular?

Now we can see many PIR motion sensor light in our life, which is inducted by human body. The human body has a constant body temperature, generally around 37 degrees, so it emits infrared light of a specific wavelength. The PIR motion sensor light controls the illumination of the lighting by capturing the infrared light of this specific wavelength.

Different from the remote controlled led lighting, the biggest feature of the PIR motion sensor light is the delay time lighting, because the human body can't stand in front of the switch to keep the light on, once the infrared sensing range is left, the light can't be turned off immediately. How to extinguish it after turning on the light? This requires time-lapse lighting to control the lighting time. During the delay time period, if someone is active within the effective sensing range, the switch will continue to be turned on. After the person leaves, the delay will automatically turn off the load, realizing the intelligent control function of "light on when people come and light off when people out". Another feature of the PIR motion sensor light is the application of light-sensitive control, intelligent motion sensor lamp Flare, switch automatic metering, and no light when the light is strong. It usually works when the outside light is below 15 lumens, but some of the all-weather infrared sensor lights for the basement or garage will not increase the light control.

It should be noted that the false alarm rate of the PIR motion sensor light has a great relationship with the installation position and installation method. Therefore, when installing the PIR motion sensor light, it should be away from heating, air conditioners, refrigerators, stoves, etc., and the light should not be straight to the window to prevent False alarms caused by disturbances in the flow of hot air outside the window and movement of people. Many people think that the PIR motion sensor light is only suitable for special areas such as corridors and balconies. In fact, with the development of technology, the infrared sensing distance and sensing angle of the PIR motion sensor light are constantly improving. Due to its high sensitivity and time-delayed lighting characteristics, many families choose to install PIR motion sensor light in the baby bed, cabinet and other places. The USB charging cabinet light is installed in the cabinet. Once someone enters the sensing range, the special sensor detects the change caused by the infrared spectrum of the human body, and the lighting source is automatically turned on. If the person does not leave and continues to move, the light will remain bright and treat people. It will automatically close after leaving.

Some PIR motion sensor lights are available in warm white and cold light, suitable for lighting needs in different seasons. Under the same power, the LED light source not only has stronger brightness than ordinary fluorescent lamps, but also has low power consumption and high temperature resistance, which is very energy-saving. LED light source has low light decay, high color rendering index, no harmful metal in the lamp bead, easy recycling and reprocessing of waste, and is very environmentally friendly.