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First Eufy outdoor motion sensor DIY – Extending Eufy outdoor motion detection range

Blog_Tech_First Eufy outdoor motion sensor DIY - Extending Eufy outdoor motion detection range

In this post, I’m going to show you how to convert the indoor Eufy motion sensor to be useable outdoors.  If you own a Eufy security camera system with cameras that use PIR [Passive Infra Red] sensors and a HomeBase 1 or 2, you may find that your cameras may not always give you the best coverage that you need.  Sometimes, by the time the PIR sensors detect motion and turns the camera on to record, you may have missed the relevant action and not enough has been recorded to let you know what happened.  So, what can you do?

Here’s your solution!  The great thing about these add-on motion sensors is that they can be added to your Eufy system to trigger specific cameras to start recording.  They can also send you notifications of motion events or even trigger an alarm.  You can place them almost anywhere… near the ground, on a wall, in a tree and more as long as it is able to connect to the home base.  That way you can extend the coverage area of your security system.  The bad thing is that these sensors are only compatible indoors… that is, until now.

Frakking Creations. We’re showing you the good stuff on how to DIY outdoor motion sensors for Eufy.  Just 3 easy steps anyone can do!  If you haven’t checked out our other videos on security camera DIYs like Solar power, How-to Installation, External power or vinyl siding installation without drilling, check them out too for more ideas – Links at the end of this post!

Watch the full video here!

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And… Before you attempt this DIY, a quick disclaimer.  I have not fully tested this DIY solution yet but am currently undergoing outdoors testing.  Subscribe to our YouTube channel and look for an update video in the future.  Also, this has not been approved by Eufy so if you try this out you are doing this at your own risk!

When I first saw this sensor available, I knew it would be great to have to extend outdoor coverage of the cameras.  But, I was disappointed to learn that it was not compatible for outdoor use.  However, I bought 2 of these sensors knowing that I would modify them for outdoor use.  The key for me was to make it weatherproof and easy for anyone else to DIY.

Quick update:  So far this setup has worked well and passed it’s first winter test with temperatures below -25 °C.  It has helped us extend the detection range of our outdoor cameras by triggering recordings from motion detection further out from the actual cameras.

Attempt #1 - Fail

I originally bought 2 of these cases with hopes of using them to house the sensors in but soon found out that they cannot be used.  The reason is that Infra-red does not go through certain plastics.  These motion sensors detect motion using Infra-red heat.  I had always known that Infra-red radiation doesn’t go through glass.  That’s why you cannot see through glass using thermal cameras like the Seek Thermal camera I am using here.  What I didn’t know was that this applies to certain hard and soft plastics too.  So scrap this idea…

Attempt #2 - The winner is!

I looked online long and hard and finally found this housing, which is perfect for our use.  It is slightly bigger in size to the motion sensor, fits the sensor snugly and already comes with a mount.  Perfect!  We only need to make it more weather resistant… basically splash resistant.  If you are interested in trying this DIY out, check our video description below for links to the products used or similar.

Let’s get to it.

Items needed

  • Eufy Motion Sensor
  • Sensor housing  (Links to purchase below)
  • Clear Plastic bag
  • Glue
  • Scissors
  • Mini spatula
Eufy motion sensor for outdoors

Step 1 - Splash proofing the front panel

Grab your clear plastic sheet and make sure to test it to make sure the sensor can detect through it.

Then cut a rectangular shape for the front panel.  It must be larger than the opening but slightly smaller than the frame for the glue to be applied.  Attach the cut sheet to the front panel using the glue.  Start by applying glue around the inside of the front panel, slightly larger in size to the plastic sheet you cut earlier.  Note that the bead of glue should not be too close to the edges so that the glue does not overflow onto the sheet or frame when attaching the sheet.  Next attach the plastic sheet, adjust to center it and make it smooth and flat.  Press down around the glue to make the sheet stick.  Finish off by applying glue around the edge of the sheet for better sealing. 

Let the glue dry before continuing.  Be very careful not to move or damage the glued parts.

Step 1 - Splash proofing & Bug proofing the bottom opening

There is a hole at the bottom of the housing which holds the front panel in place and also allows you to open it.  This hole could allow rain water or snow in.  Also, insects may love to make a home out of the housing.  So, let’s close it off.

Use a plastic sheet and cut a rectangular shape that fits like so.

Glue it to the housing around the hole with the front edge unglued so that when the front panel clip goes in, it will have a space to sit.

Cut the plastic sheet to just cover the hole.

Glue each side down as follows.

From the inside, push down and out into the opening to make room for the front panel clip.

Let the glue dry overnight.

After the glue dries you can test out the weatherproofing.  Just note that the front panel can allow some water in if the motion sensor is not installed undercover of a roof.  So, if you need to install in places where the sensor is not covered, make sure to glue around the front panel to seal it off.

When the batteries need replacing, you can cut through the glue and peel it off.  Note that the housing should always be installed with the hole at the bottom facing downwards as it is not fully waterproof.

Step 3 - Assemble everything

Take the protective plastic off the sensor.

Insert the battery into the motion sensor and sync to homebase in the app.

Insert the sensor upside down into the housing.

Attach the front panel and glue it if necessary for your use.

Attach the mount and you are ready for action.

Note that this is a standard 1/4″ connector, so you can use any other mount you want including ones that are shorter, metal or specialized.  Find links to more mounting options in the video description below. 

There you go!  We just made a DIY outdoor Eufy motion sensor with mount.  It was very easy to do and now we can add several outdoor motion sensors to our security system.  This will improve detection, notifications and recording capabilities.  Only thing left is to find a location, install and test.

Lookout for our video on vinyl siding installation for security cameras, solar panels and these sensors using these hangers.  No drilling required, plus reposition at any time.  They are good but will need our DIY hack to make them hold more weight!  Find out in our video.

If you enjoyed or found our video useful, please LIKE our video, share and subscribe to help our channel grow!  Check back on our channel for more as we love showing you the good stuff.

Eufy outdoor sensor DIY items

Alternate Security Camera Mounts

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