Forums

The several Forums on this page are intended as a welcoming venue for information exchange and mutual support. Through facilitating dialogue with a central focus, it is hoped to emulate the knowledge base and unity of purpose that has so far given advantage to the technology sector.

By its nature, relevant subject matter may involve personal accounts of health or psychological effects. To encourage sharing on an equitable basis, any observed instance of disrespect, trolling or commercial intent will be subject to appropriate moderation.

How to Join

Although anyone can read the Forums, you must register to post content. Please use our Contact form to provide 1) a username, 2) a preferred password and 3) your email address. We will then subscribe you and post confirmation. Once received, log in, select one of the seven categories of interest below, and then “Add Topic”. Subscriptions can be cancelled at any time via the Contact form.

Although this platform is primarily directed toward conditions within Australia, there are no geographical restrictions upon joining in. Daily statistics show 50 to 150 visits originating from dozens of Countries

Occupancy Sensors  

  RSS

Sockeye
(@sockeye)
Active Member
Joined: 9 months ago
Posts: 12
20/11/2019 7:41 pm  

While wondering how some new air conditioners sense occupants in the room, I found the following article.

https://www.doityourself.com/stry/6-types-of-occupancy-sensors-explained

I was surprised to learn of the Microwave Detector and Occupancy Sensor.

This could explain why my wife doesn't like going near the office window without the vertical blinds closed.

As there is a solar/battery powered LED sensor light mounted on the garage, pointing towards the office window.


Quote
emrtechie
(@emrtechie)
Active Member
Joined: 9 months ago
Posts: 14
25/11/2019 1:35 pm  

If there is an observed adverse response, the LED light may employ active, as opposed to passive, technology. This is most often implemented through sensed reflection of the infrared or ultrasonic energy they emit. However, radar-like RF motion detection is becoming more common.

To provide sufficient voltage to power the LED, solar fixtures also contain a high speed switching circuit and "step-up"transformer. As a byproduct, this causes an electromagnetic field within the KHz frequency band to be radiated into the surrounding air.

Additional to the above, LED's emit a very narrow spectrum of light known to be unhealthy under certain circumstances. Below is one example of the numerous articles available online.

https://articles.mercola.com/sites/articles/archive/2016/10/23/near-infrared-led-lighting.aspx


ReplyQuote
beagle
(@beagle)
Active Member
Joined: 9 months ago
Posts: 12
08/12/2019 4:58 pm  

Thanks to both of you - this is useful information. (I quail when I think about ioT...)


ReplyQuote
Share:

You are not alone. According to certain experts, over 35% of the world’s population feels some form of unwanted reaction to EMR exposure. Additionally, everyone is susceptible to induced biological abnormalities that may not manifest perceptibly for years or even decades.