I'm nearly done my first modded sub, and I'm trying to set up a very simple creature detection, where whenever something comes close to the sub, it causes alarms and lights to go off for the duration of it being in the motion detector's radius. The problem I'm having though is that in order to have a full 360 degrees of motion detection, I need to place 9 detectors (7 on the top and bottom, and two on the front and back) and I can't get it to function properly.

I've been trying to wire it through a relay (through set_state) to set off the alarm in the command room, but whenever I put more than one detector through the relay, either only 1 works, or they just don't work at all. I can only get 1 to work at a time without having 8 alarms for each detector. Is there something that I'm missing, or an easier way to have them all work together? I just want the alarm to go off if *any* of them detect something. (Photo for reference)


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I use these with webcore for hallway lighting and have it setup so that on motion it turns the lights on for 3.5minutes this way if it retriggers after 3m the lights stay on. For this type of use case they are perfect (cheap, reliable, long battery life, etc) but for others they just wont work right due to the timouts

I purchased 2 of these motion sensors from mydigitaldiscount.com. On the product description page, there are SmartThings integration instructions AND a link to a DH that works just fine with the sensors I purchased. Here is a link to the page:

In addition to some nifty commercial applications, motion sensors are commonly used in home security systems to alert you (or your professional monitors) to someone's presence.\u00a0An outdoor motion sensor can trigger a siren or alarm system to send unwanted visitors running. You can also place motion sensors near a swimming pool or tool shed to make sure your kids don't get into a dangerous situation.A video doorbell camera with a built-in motion detector can tell you when a delivery person or visitor stops by.An indoor camera with a motion sensor can start recording cute moments with your pets or alert you to your crib-climbing toddler.\u00a0Some dash cams even include motion detectors to trigger recording when another car approaches your parked vehicle.The sky's the limit! Just make sure you stick to self-monitored motion sensors if you're not using them to detect a break-in or other dangerous scenario.\u00a0" } }, { "@type": "Question", "name": "How many motion sensors do I need?", "acceptedAnswer": { "@type": "Answer", "text": "It depends on what you want to accomplish and the motion detector's viewing angle. Read our guide to motion sensor placement for more information." } }, { "@type": "Question", "name": "What are the types of motion sensors?", "acceptedAnswer": { "@type": "Answer", "text": "These are the common types of motion sensors:Passive infrared sensorMicrowave sensorDual technology motion sensorArea reflective sensorUltrasonic sensorVibration motion sensorContact sensorVideo motion sensor" } } ] }] (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= '//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-TPSHL8C'); skip to main content Home Security Security Buyers Guides

If you want to make sure your motion sensors are in all the right spots, won't fall off the wall, and can handle your active pets, going with a professionally installed system like Vivint is your best bet.

A passive infrared sensor detects body heat (infrared energy) by looking for changes in temperatures. This is the most-widely-used motion sensor in home security systems. When you arm your system, this activates the motion sensors to report possible threats.

Some motion sensors can combine multiple detection methods in an attempt to reduce false alarms. For example, it's not uncommon for a dual technology sensor to combine a passive infrared (PIR) sensor with a microwave sensor.

Each sensor type operates in different areas of the spectrum (ranging from passive to active). Dual technology motion sensors are not as likely as other types to cause a false alarm, because both sensors need to trip in order to sound an alarm. However, this does not mean that they never cause false alarms.

Most passive infrared sensors can ignore animals up to a certain weight. A dual technology motion sensor is more pet resistant to false alarms because it requires two sensors to be triggered a certain way.

With wireless motion sensors becoming standard, DIYers have it easier than ever when it comes to installation. If you know how to use a screwdriver, you can install a motion sensor. Correct installation gives you optimal coverage for motion detection and helps avoid false alarms.

Before you install motion sensors, make sure to read the installation instructions, since they will likely include placement recommendations. Some DIY systems also give you electronic prompts, video tutorials, or have you call a representative to walk you through the setup process.

Most motion detectors have a mounting bracket that pops off the main body of the device so you can screw it into the wall first, then clip the motion sensor back in. This also makes it easier for taking the motion detector off the wall during maintenance. Other infrared sensors may require a full disassembly for mounting.

Follow the manufacturer's instructions to connect your motion sensor to your system. Most DIY systems walk you through this process, often using the main keypad or mobile app to set up and adjust your motion detectors.

If you have smart motion detectors, like the Z-Wave powered Aeotec TriSensor (about $45), you can connect it to lights and other smart devices through a smart hub like SmartThings so that a light turns on whenever there's motion. You can even use the smart hub's app to schedule motion alerts to your mobile devices when there's movement is during certain times of the day or night.

Over time, dust and debris can gather on the screen of your motion sensor and interfere with the infrared energy, making it less effective at motion detection. Clean it at least once every couple of months with a dry or slightly damp microfiber cloth.

Just like your field of vision decreases when you're wearing a hat with a brim or a visor, an overhang can block the motion detector light's 180-degree sensing angle, turning it into a 90-degree sensing angle.

Motion sensors are like flashlights sending out a beam of light but with motion-detecting infrared energy waves instead of light waves. Just like a light is brighter closer to the bulb, the infrared radiation is denser nearer to the device and it spreads out farther away.

A motion detector's waves can't penetrate through walls or other hard objects like furniture. When you set up your motion sensor, imagine it like a light on the wall. Anything that creates a shadow from that light's position can also block the motion sensor's ability to cover the shadowed area.

I am looking for a compatible motion detector to sense an armaidillo that is eating my back yard. Most PIR sensors EXCLUDE "pets". I want one that will sense them outside. Any suggestions would be greatly appreciated.

I have Wyze cams that will pick up the motion. I even have videos. If I could integrate a motion output from the Wyze cam into Hubitat, that would be a great solution. Dillos are apparently easy to catch if you can find their hole. That's goal one. If I know he's out there I'll scare him off and follow him home. But I REALLY don't want to go on "night watch" to do it.

The lenses on many of these motion detectors are broken into segments. The segments allow you to focus on some areas of a space and ignore others. As a result, you can configure detectors to ignore certain types of motion or motion in specific zones.

Finally, you can purchase detectors that use both kinds of technology, PIR and microwave. The advantage of dual-technology sensors is that they verify one another. Both sensors have to detect movement before the detector registers that movement. This verification method helps prevent false alarms.

THE MORE YOU KNOW: Because they rely on radio waves, tomographic motion detectors work through walls. As a result, such detectors can cover large areas and hide behind objects or within walls.

Asking whether you need a motion detector is a little like asking if you need a home security system. If you want to keep your home safe from intruders, the answer is always going to be yes. Even apartments need security systems!

You can adjust the lenses of a PIR sensor, for example, to pick up movement in specific areas. In addition, most motion detectors have dials that allow you to set their sensitivity levels. With this feature, you can get your detectors to ignore your pets.

Light can set off a motion detector. If the detector uses light-based sensors, such as PIR sensors or area reflective sensors, turning on the light creates a rapid change in the electromagnetic spectrum the sensors are reading. That change can register as a movement.

It works OK - heat goes on and off - except the motion detector. No matter how I "approach" the thermostat (mounted chest high) it doesn't sense my presence and light the display. I have to touch the thermostat on the right to get the display to illuminate. Confirmed the relevant setting in the App is correct ("On Approach --> toggled ON), reset the device at least twice. Batteries are new and Status = Good. No other weirdness except I do have an N260 caution on the display, indicating I may need an alternate power source? Not sure. In any case, as installed it is otherwise working fine. Any thoughts or suggestions on dysfunctional motion detector? 2351a5e196

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