how does motion detector work

Bestseller No. 1
Guardline Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor & Detector- Best DIY Security Alert System (one Receiver + one Sensor)
  • DEPENDABLE HOME SECURITY SYSTEM: Guardline offers the most RELIABLE and ACCURATE outdoor motion detector on the market today. False alarms are minimized due to an adjustable detection width option for the sensor "eye" and a swivel mount to focus the detection angle of the sensor. Need more range? Check out our ¼ mile option.
  • SUPER EASY TO INSTALL AND CUSTOMIZE: Our wireless driveway alarm sensor is a fully expandable and feature rich plug-and-play device that sets up in minutes. Simply place your motion sensor/or multiple sensors (expandable up to 16 sensors) anywhere on your property and when a person, vehicle or large animal moves within 40 feet of the sensor’s angled eye, a signal will be sent to the receiver that will chime in your home just like a long-range doorbell.
  • RELIABLE + REALISTIC RANGE: We guarantee a 500 ft range which has been tested in real world settings with trees, buildings and walls in order to make true and realistic wireless range claims.
  • BUILT TO LAST: Outdoor sensor is made with industrial grade PVC housing, rubberized weather resistant seal, and a sunshade. Wireless sensor can be installed anywhere and runs on (4) AA batteries for up to one year. Receiver is packed with features including LOUD & adjustable volume, battery backup, and a 12-volt relay to add wired external alarms.
  • REAL PEOPLE, REAL EXPERTISE: Guardline Security has been manufacturing security products since 1999. We are local guys who are driveway alarm geeks and we're obsessed with building reliable, quality products. PEACE OF MIND extends beyond our products- we offer friendly and knowledgeable tech support that will help you both before and after your purchase.
Bestseller No. 2
Urban Security Group Wired PIR Motion Detector Alarm Motion Sensor : Pet Immune : Normally Open or Normally Close : 3 or 30 Seconds Built-In Alarm Out Timer : 9-16V DC : 40 Ft Range : 110° H & 60° V
  • Urban Security Group Wired Motion Detector Alarm Motion Sensor With Pet Immunity Up To 12KG Pet Size
  • NO or NC Relay Adjustable ::::: Normally Open or Normally Close (Set via Jumper)
  • 3 Seconds or 30 Seconds Built-In Alarm Out Timer (Set via Jumper)
  • 9-16V DC ::::: 40 Ft Range ::::: 110° H & 60° V ::::: Status LED Light ON or OFF (Set via Jumper)
  • Pulse + Sensitivity Adjustable (Set via Jumper) ***** IF UNSURE ABOUT CONNECTIONS, PLEASE CONTACT PROFESSIONAL ALARM OR ELECTRICAL COMPANY ON HOW TO WIRE THIS MOTION SENSOR INTO YOUR EXISTING SYSTEM!
SaleBestseller No. 3
SMART CAREGIVER TL-5102MP Motion Sensor And Pager
  • Allows caregiver freedom to monitor movement remotely
  • Removes alarm noise from bedside
  • Optional adjustable mounting bracket
  • 1 Caregiver Pager (Batteries Sold Separately) 1 Motion Sensor (Batteries Sold Separately)
SaleBestseller No. 4
Ring Video Doorbell (1st Gen) – 720p HD video, motion activated alerts, easy installation – Satin Nickel
  • 720p HD video doorbell that lets you see, hear and speak to people from your phone, tablet, or select Echo device.
  • Get notifications whenever motion is detected by adjusting your motion zones.
  • With Live View, you can check in on your home any time through the Ring app.
  • Easily setup your Ring Video Doorbell by connecting to wifi via the Ring app and mounting in your desired location.
  • Powered by a built-in rechargeable battery or connects to existing doorbell wiring. With a Ring Protect Plan (subscription sold separately), record all your videos, review what you missed for up to 60 days, and share videos and photos.
SaleBestseller No. 5
Directed Install essentials Dual Zone Motion Sensor 508d
  • Invisi beam Field Disturbance Sensor
  • Generates two invisible detection fields around your vehicle
  • Offers either a Warn Away response or full alarm
  • Great for convertibles, trucks or any car
  • Detects moving high-density objects using RF field-disturbance technology
Bestseller No. 6
WJLING Motion Sensor Alarm, Wireless Driveway Monitor Alarm, Home Security Business Detect Alert with 3 Sensor and 2 Receiver, 38 Chime Tunes - LED Indicators
  • 【Wireless, Easy and Fast Installation】: This monitor system is fully-expandable, with plug-and-play sensors that can be set up within minutes. The sensors can be mounted to walls, fence posts, trees, or any other surface, which is great for homes, offices, garages, yard and shopping malls.
  • 【3 Alert Options & 38 Chimes to Choose From】: You can select 1 of 3 ways of being alerted (Sound/LED Flash/Sound and LED Flash) and 3 volume levels from 25-80dB. You can also select from 38 Ringtones with Bright LED Light.
  • 【Wireless Plug-in Receiver】: The portable wireless plug-in receiver plugs into any standard outlet. The sensor uses 3 AAA batteries (Not Included). Infrared sensor detects motion and sends a signal to the receiver. Detection time delay in between motion sensor detector alerts is configurable from 15 seconds to 30 seconds, just place the sensor at the entrance to your driveway and the receiver inside your home.
  • 【Support Long Distance Connection】: Working range up to 328 feet (100 meters) between receiver and transmitter allowing you to place it a good distance. It can be alerted to visitors, notice door opening, scare off unwanted intruders, or even know when your children have accessed restricted areas.
  • 【Applicable places】: Ideal for front doors, hallway, window frames, driveways, walking paths, and anywhere in your home you want to be alerted to motion. Also great to alert business owners that are working in the back, or out of sight, to customers entering their store.Please note that this not waterproof. Keep it away from rains or cover adequately.
Bestseller No. 7
Seanme Motion Sensor Alarm, Wireless Driveway Alarm, Home Security Business Detect Alert with 4 Sensor and 1 Receiver,38 Chime Tunes - LED Indicators for Indoor Use
  • LONG RANGE CONNECTIION-Working Range up to 328 feet (100 meters) between receiver and transmitter allowing you to place it a good distance from the receiver to warn you of arrival and departure of family members, unwanted guests or solicitors, or anyone who visits your home or business.
  • Easy, Fast, Wire Free Installation: Infrared sensor detects motion and sends a signal to the receiver. Chose from 38 Ringtones with Bright LED Light. Sensor is wall mountable.
  • Ideal for front doors, window frames, driveways, walking paths, and anywhere in your home you want to be alerted to motion. Also great to alert business owners that are working in the back, or out of sight, to customers entering their store.Please note that this not waterproof.Keep it away from rains or cover adequately.
  • Wireless Plug-in Receiver: The portable wireless plug-in receiver plugs into any standard outlet. The sensor uses 3 AAA batteries (Not Included). Detection time delay in between motion sensor alerts is configurable from 15 seconds to 30 seconds, just place the sensor at the entrance to your driveway and the receiver inside your home.
  • 4 Sensor and 1 Receiver- Receiver support to pair with multiple sensors, Sensors can be installed on different floors (rooms) to ensure that alert chime.
SaleBestseller No. 8
Motion Sensor Door Chime for Business, Outdoor Doorbell Kit Wireless Driveway Alert: Infrared Motion Sensor Chime with 1 Plug-in Receiver and 1 PIR Motion Sensor Detector Alert - LED Indicators
  • Easy, Fast, Wire Free Installation: Infrared sensor detects motion and sends a signal to the receiver. Chose from 38 Ringtones with Bright LED Light. Sensor is wall mountable.
  • Wireless Plug-in Receiver: The portable wireless plug-in receiver plugs into any standard outlet. The sensor uses 3 AAA batteries (Not Included). Detection time delay in between motion sensor alerts is configurable from 15 seconds to 30 seconds, just place the sensor at the entrance to your driveway and the receiver inside your home.
  • Working Range up to 328 feet (100 meters) between receiver and transmitter allowing you to place it a good distance from the receiver to warn you of arrival and departure of family members, unwanted guests or solicitors, or anyone who visits your home or business
  • Ideal for front doors, window frames, driveways, walking paths, and anywhere in your home you want to be alerted to motion. Also great to alert business owners that are working in the back, or out of sight, to customers entering their store.
  • Note: Includes 1 plug-in receiver unit and 1 motion sensors requiring 3x AAA batteries (Not Included). Receiver size: 3.14” L x 2.99” W x 1.29” H (80 x 76 x 33mm) Sensor Size: 3.14” L x 2.32” W x 1.77” H (80 x 59 x 45mm)
Bestseller No. 9
Kangaroo Home Security Motion Sensor (1 Pack)
  • Security for all: Got a smartphone, Wi-Fi and somewhere to monitor? Our KANGAROO motion sensor has you covered. An easy step to a safer home, The motion sensor detects motion and sends an alert directly to your phone. Choose to monitor your own home with our free basic plan, or kick it up a notch with our complete plan, which includes the option to have professional monitoring. Great for keeping tabs on apartments, Bedrooms, dorms or entire houses!
  • Pet Rejection technology: Nothing’s worse than a day full of false alarms. We designed a special setup for pet parents, which the app will conveniently walk you through, that keeps Fido from triggering your sensors. Check out our reviews and you’ll see: pet parents are pleased!
  • Pick your plan: one plan does not fit all. With KANGAROO, you can choose to monitor your home for free or subscribe for a little more assistance. KANGAROO basic allows for unlimited user invitations and sends you push notifications alerts. It’s a great option for your own home or a low-risk space. KANGAROO complete gives you the added bonus of text and voice notifications, Alexa INTEGRATION and even the option to have a professional monitoring center follow up with you should you miss an alert.
  • UP TO 20% OFF INSURANCE: When you opt for Kangaroo Complete, you’ll be eligible for up to 20% off your homeowners or renters insurance rate with providers like State Farm, Allstate, Farmers, Liberty, Travelers, USAA, Nationwide, Chubb, and many others. We take care of all the tedious paperwork, leaving you free to enjoy the peace of mind for as little as $5 per month paid annually.
Bestseller No. 10
Motion Sensor Alarm, Wireless Security Driveway Alarm, Home Motion Sensor Detect Alert with 3 Sensor and 2 Receiver,38 Chime Tunes - LED Indicators
  • EARY TO USE-Easy, Fast, Wire Free Installation, Infrared sensor detects motion and sends a signal to the receiver. Chose from 38 Ringtones with Bright LED Light.
  • LONG RANGE CONNECTIION-Working Range up to 328 feet (100 meters) Optimum distance between receiver and transmitter, more conducive to motion sensor alarm warn you of arrival and departure of family members.
  • APPLICABL PLACE-Ideal for front doors, window frames, driveways, walking paths, and anywhere in your home you want to be alerted to motion. Provide you with safe protection.
  • Wireless Plug-in Receiver: The sensor uses 3 AAA batteries (Not Included).The portable wireless plug-in receiver plugs into any standard outlet. Detection time delay in between motion sensor alerts is configurable from 15 seconds to 30 seconds, just place the motion sensor alarmat the entrance to your driveway and the receiver inside your home.
  • MULTIPLE SENSORS- 3 Sensor and 2 Receiver- Receiver support to pair with multiple sensors, Sensors can be installed on different floors (rooms) to ensure that alert chime. Please note that this not waterproof.Keep it away from rains or cover adequately.

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