So then…what about the radar electronics? Well, this is a good time to discuss something just about the Doppler Radar microwave motion sensor modules. Oh, wait – want to get an overview of it all in a quick note? Ask no more, here ya go – the brief sidebar! What’s curious is that the radar circuitry seems so simple, but there’s certainly a magic-level masterminding on the go here! Ofcourse, there’re single PCB versions as well, and you can find a photograph below (thanks to my usb microscope). In some models, the radar sensor is a separate PCB mounted at the top of the main PCB which’s often referred as the LED plate. Below you can see the key parts of a typical radar LED light bulb – another wondrous example of Chinese electronics!

Okay, here is what you should know about the radar magic trick in general.īasically, structure of the radar bulb is very similar to the passive infrared sensor bulb except that a tricky ‘Doppler Radar’ microwave motion sensor module is being used in the radar bulb for motion/occupancy detection. The brand name is Halonix!Īt first, note that I am not affiliated with Amazon or the companies/sellers making/selling these LED bulbs. This is the photograph of a “Made For India” 10W Radar LED Bulb I bought from Amazon. What is interesting about this LED bulb is that it does indeed seem to detect motion but there’s no extruded sensors – simply looks like an ordinary LED bulb. The Radar LED Light BulbĪnyway, more recent trend is towards “Radar” LED light bulbs! The radar LED light bulb is nothing but an AC230V LED light bulb which claims to employ radar to detect motion. Besides, motion-sensing technology is vastly improved, meaning that there is less of a chance the light bulbs will malfunction and reduce the benefit of using them. As mentioned before, motion-sensing technology reduces electricity consumption by eliminating the possibility that the light bulbs will accidentally be left on. Motion-activated light bulbs are becoming more commonplace, not only in homes but in other similar places.

It’s simple, straight forward, and self-explanatory! The key to getting more about the inside electronics is to refer the following basic block diagram of the PIR motion-activated LED light bulb (as a reference). Below you can see the key parts of a Chinese AC230V PIR motion sensing LED light bulb. Technically, a PIR motion sensing LED light bulb comprises a PIR motion sensor, an LED plate, and a power supply. Passive Infrared (PIR) motion sensor based LED light bulbs hardly need an introduction as you find such gizmos everywhere. The obvious advantage of a motion sensor light bulb with an integrated a photo sensor (light sensor) is that it will turn on when someone or something is nearby but only at night, or when there is insufficient natural light. Now a days light bulbs with various types of sensors can provide energy savings, for example, a motion sensing light bulb can protect against absentmindedness, in terms of switching lights off in low-traffic rooms and/or outdoor areas. Note that reducing electricity consumption is just one of the ways for fighting climate change. When it comes to ways to reduce energy consumption there are many changes that you can make to your own home that have additional benefits for you.

Motion sensor light bulb health issues