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How Do Motion Sensor Lights Work To Protect Your Home?

You Can Learn How Motion Sensor Lights Work To Keep Your Friends And Family Safe Around Your Maryland, DC, Or Northern Virginia Home

Motion sensor lights work in 2 different ways: active or passive. Active sensors send out sound waves that activate the light when something passes through it. Passive motion sensor lights use infrared lights to sense changes in heat (like body heat) or light beams that trigger when something walks in front of it.

How do motion sensor lights work like this one?

Motion sensor lights work in 2 different ways: active or passive. Active sensors send out sound waves that activate the light when something passes through it. Passive motion sensor lights use infrared lights to sense changes in heat (like body heat) or light beams that trigger when something walks in front of it.

How do motion sensor lights work like this one?

Because There Aren’t Light Switches Outside!

“This is it, we’ve got to do something before someone gets seriously hurt!”

Angie moans as the sweet, sweet cold from the ice pack seeps into her twisted ankle. She was walking back in from taking the garbage out when she accidentally stepped off the path.

Now she’s hurt and it’s all because there aren’t any lights outside their home.

Dark house without landscape lighting or motion sensor lights

Alex, her husband, looks up at her as he holds the ice pack in place. “And it’s because there aren’t light switches outside? Well, how about we put some motion sensor lights outside instead?” Angie doesn’t know how they work but it sounds like a good idea.

Angie takes out her phone and looks up “how do motion sensor lights work” on Google.

Benefits Of Motion Detector Lights

The first bit of info Angie finds is the benefits of having motion sensor lights:

  1. No more leaving lights on all day and night
  2. Guests and family can see where to walk
  3. No more crushing plants by the walkway
  4. Scare off pests like raccoons
  5. Possibly deter unwanted guests
Flood lights work with motion sensor lights
Flood lights work with motion sensor lights
  1. No more leaving lights on all day and night
  2. Guests and family can see where to walk
  3. No more crushing plants by the walkway
  4. Scare off pests like raccoons
  5. Possibly deter unwanted guests

After reading about these she’s already liking this type of light. Now for what she’s really after: learning how they work.

How Do Motion Sensor Lights Work

Angie learns that, basically, motion sensor lights work by sending out a signal that turns on the lights when something passes in front of it. There are 2 main ways motion sensors work: actively and passively.

Active Sensors

Angie finds it kind of funny that these types of motion sensors use sound waves like the ones for pregnancy ultrasounds. These waves reflect back to the sensor in a continuous motion. When something breaks the cycle by walking in front of it, it triggers the lights.

Passive Sensors

There are 2 types of passive motion sensor lights: infrared and photosensor (which Angie finds out doesn’t use pictures).

some passive motion sensors use infrared lights

Infrared sensors use infrared light to sense heat, namely body heat. A large and sudden increase in the heat it’s sensing will trigger the light. Angie finds out that while animals can also trigger the lights temperature changes like the sun rising or setting shouldn’t.

Angie learns that photosensors use laser beams, but not the bad guy kind. These beams of light are more like the ones that make up the maze protecting the vault that spies are trying to break into.

So when something passes through the light beam it should trigger the light.

How To Set Up Motion Sensor Lights

Angie finds several tips on setting up motion sensor lights:

  • Install them high up so they can’t be messed with
  • Keep lights at a downward angle to avoid water damage
  • Place the sensor below the lights
  • Make sure the lights don’t block the sensor
    • Have a 1 to 2-inch space between the sensor and the lights

They can also follow these tips for setting up outdoor lights for security.

Will You Make A Move?

Angie and Alex are getting ready to get their motion sensor lights! The most common ones are floodlights that light up large areas like driveways and walkways. Once they install them they and their guests will be able to see where to step (and where not to).