Sensor Detector
266,958 results

Item Price Seller
5Pcs Mini IR Infrared Pyroelectric PIR Body Motion Human Sensor Detector Module

5Pcs Mini IR Infrared Pyroelectric PIR Body Motion Human Sensor Detector Module

$7.79Aliexpress
WIRELESS MOTION SENSOR DETECTOR DOOR GATE ENTRY BELL CHIME ALARM W/ 2 RECEIVERS

WIRELESS MOTION SENSOR DETECTOR DOOR GATE ENTRY BELL CHIME ALARM W/ 2 RECEIVERS

Category: Sensors & Motion Detectors
$26.09Ebay
180° 12M Outdoor Security PIR Infrared Motion Sensor Detector Switch LED Light

180° 12M Outdoor Security PIR Infrared Motion Sensor Detector Switch LED Light

Category: Sensors & Motion Detectors
$0.01Ebay
WIRELESS MOTION SENSOR DETECTOR DOOR GATE ENTRY BELL CHIME ALERT ALARM DOORBELL

WIRELESS MOTION SENSOR DETECTOR DOOR GATE ENTRY BELL CHIME ALERT ALARM DOORBELL

Category: Sensors & Motion Detectors
$18.99Ebay
HONEYWELL ADEMCO 5853 WIRELESS GLASS BREAK SENSOR DETECTOR LYNX VISTA 10 15P 20P

HONEYWELL ADEMCO 5853 WIRELESS GLASS BREAK SENSOR DETECTOR LYNX VISTA 10 15P 20P

Category: Sensors & Motion Detectors
$39.99Ebay
5Pcs Hot Sale Mini IR Infrared Pyroelectric PIR Body Motion Human Sensor Detector Module

5Pcs Hot Sale Mini IR Infrared Pyroelectric PIR Body Motion Human Sensor Detector Module

$7.79Aliexpress
HC-SR501 Adjust IR Pyroelectric Infrared PIR Human Motion Sensor Detector Module DC 5V - 20V

HC-SR501 Adjust IR Pyroelectric Infrared PIR Human Motion Sensor Detector Module DC 5V - 20V

$1.05Aliexpress
1pcs High Quality HC-SR501 Adjust Infrared PIR Motion Sensor Detector Module For Raspberry pi For

1pcs High Quality HC-SR501 Adjust Infrared PIR Motion Sensor Detector Module For Raspberry pi For

$0.99Aliexpress
OOTDTY 12M 85-265V Security PIR Infrared Motion Sensor Detector Wall LED Light Outdoor RF 140degree

OOTDTY 12M 85-265V Security PIR Infrared Motion Sensor Detector Wall LED Light Outdoor RF 140degree

$4.49Aliexpress
Free Shipping 10PCS SR501 HC-SR501 Adjust IR Pyroelectric Infrared PIR module Motion Sensor Detector Module for arduino

Free Shipping 10PCS SR501 HC-SR501 Adjust IR Pyroelectric Infrared PIR module Motion Sensor Detector Module for arduino

$8.12Aliexpress
5pcs/lot DIYmall HC-SR501 IR Detector PIR Motion Sensor Security Infrared Pyroelectric Sensor Detector Module for arduino

5pcs/lot DIYmall HC-SR501 IR Detector PIR Motion Sensor Security Infrared Pyroelectric Sensor Detector Module for arduino

$7.50Aliexpress
110v-240v Brand New 25A Dusk till Dawn Automatic Photocell Light Sensor Detector Switch Lights switch controller waterproof

110v-240v Brand New 25A Dusk till Dawn Automatic Photocell Light Sensor Detector Switch Lights switch controller waterproof

$9.25Aliexpress
Free Shipping HC-SR501 Adjust Infrared IR Pyroelectric Infrared PIR module Motion Sensor Detector Module We are the manufacturer

Free Shipping HC-SR501 Adjust Infrared IR Pyroelectric Infrared PIR module Motion Sensor Detector Module We are the manufacturer

$0.81Aliexpress
Free Shipping!New Wireless Pet-friendly Pet-Immune Animal Friendly Motion IR PIR Sensor Detector 433MHzJust For Our Alarm System

Free Shipping!New Wireless Pet-friendly Pet-Immune Animal Friendly Motion IR PIR Sensor Detector 433MHzJust For Our Alarm System

$13.06Aliexpress
TSOS5 PIR Motion Sensor Light Switch Detector Infrared Wall Occupancy White

TSOS5 PIR Motion Sensor Light Switch Detector Infrared Wall Occupancy White

Category: Sensors & Motion Detectors
$14.99Ebay
Occupancy Motion Sensor PIR Detector Light Switch Manual ON/OFF Option Ivory

Occupancy Motion Sensor PIR Detector Light Switch Manual ON/OFF Option Ivory

Category: Sensors & Motion Detectors
$7.5Ebay
Wireless Mini PIR MP. Alert Infrared Sensor Motion Detector GSM Alarm Monitor US

Wireless Mini PIR MP. Alert Infrared Sensor Motion Detector GSM Alarm Monitor US

Category: Sensors & Motion Detectors
$14.89Ebay
3-Pack Instapark IN07A Water Leak Leakage Detection Detector Sound Alarm Sensor

3-Pack Instapark IN07A Water Leak Leakage Detection Detector Sound Alarm Sensor

Category: Sensors & Motion Detectors
$19.99Ebay
Instapark IN07A Water Leak Leakage Detection Detector Sound Alarm Sensor Siren

Instapark IN07A Water Leak Leakage Detection Detector Sound Alarm Sensor Siren

Category: Sensors & Motion Detectors
$8.99Ebay
Fosmon Water Leak Leakage Detector Sound Alarm Sensor Siren w Low Battery Alert

Fosmon Water Leak Leakage Detector Sound Alarm Sensor Siren w Low Battery Alert

Category: Sensors & Motion Detectors
$7.99Ebay
Lutron Maestro Sensor switch, 2A, No Neutral Required, Single-Pole, MS-OPS2-WH, White

Lutron Maestro Sensor switch, 2A, No Neutral Required, Single-Pole, MS-OPS2-WH, White

Category: Tools & Home Improvement
$9.90 - $16.49Amazon
Amir Motion Sensor Light, Cordless Battery-Powered LED Night Light, Stick-anywhere Closet Lights Stair Lights, Safe Lights for Hallway, Bathroom, Bedroom, Kitchen, etc. (White - Pack of 6)

Amir Motion Sensor Light, Cordless Battery-Powered LED Night Light, Stick-anywhere Closet Lights Stair Lights, Safe Lights for Hallway, Bathroom, Bedroom, Kitchen, etc. (White - Pack of 6)

Category: Kitchen
$20.86 - $21.99Amazon
Z-wave Plus Easy Install with PET Immunity Motion Detector with PET Immunity, White (PIRZWAVE2.5-ECO)

Z-wave Plus Easy Install with PET Immunity Motion Detector with PET Immunity, White (PIRZWAVE2.5-ECO)

Category: Electronics
$24.59 - $26.59Amazon
First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm

First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm

Category: Tools & Home Improvement
$14.86 - $30.38Amazon
Samsung SmartThings Water Leak Sensor

Samsung SmartThings Water Leak Sensor

Category: Tools & Home Improvement
$31.99 - $48.95Amazon
D-Link DCH-S160 mydlink Wi-Fi Water Sensor

D-Link DCH-S160 mydlink Wi-Fi Water Sensor

Category: Electronics
$48.95 - $51.50Amazon
Glentronics, Inc. BWD-HWA Basement Watchdog Water Sensor and Alarm

Glentronics, Inc. BWD-HWA Basement Watchdog Water Sensor and Alarm

Category: Tools & Home Improvement
$7.00 - $14.99Amazon
Corentium Home by Airthings, Radon Detector, USA version in pCi/L

Corentium Home by Airthings, Radon Detector, USA version in pCi/L

Category: Tools & Home Improvement
$165.96 - $199.95Amazon
First Alert SA303CN3 Battery Powered Smoke Alarm with Silence Button

First Alert SA303CN3 Battery Powered Smoke Alarm with Silence Button

Category: Tools & Home Improvement
$7.69 - $14.98Amazon
Kidde Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA

Kidde Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA

Category: Tools & Home Improvement
$10.00 - $48.95Amazon

Sensor Detector Product Descriptions

First Alert SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm

Utilizes both ionization and photoelectric smoke sensors for optimal performance.

Operates on 2 AA batteries (basic batteries included), works best with Polaroid AA batteries.

Intelligent sensing technology reduces non-emergency or nuisance alarms, detects both flaming and smoldering fires with dual sensors.

Emits a loud 85 dB alarm for ample warning.

SA320FF designates SA320CN package in FrustrationFree packaging with UN2911 labels for ion smoke alarms.

While all smoke alarms are designed to detect smoke, different sensing technologies react differently to certain types of fires. This alarm makes use of both ionization and photoelectric sensors to offer the earliest possible warning--regardless of the type of fire. Sometimes a fire can smolder for hours before erupting into flames. Photoelectric Sensing Technology is more sensitive than Ionization Sensing Technology at detecting these sorts of smoldering fires, like those caused by cigarettes burning in couches or bedding. Other fires erupt into flames quickly, like kitchen grease fires or fires fueled by paper burning in a wastebasket. Ionization Sensing Technology is generally more sensitive than Photoelectric Sensing Technology at detecting these sorts of flaming fires.


Lutron Maestro Sensor switch, 2A, No Neutral Required, Single-Pole, MS-OPS2-WH, White

Motion Sensor Switch automatically turns lights ON and OFF.

Detects fine motion 2-3 times better than competition with up to 900 square feet of coverage.

Easily replaces existing switches in all homes - no neutral required and simple button press setup.

Works with all bulb types: 250 Watt incandescent, halogen, ELV; 200 Watt MLV; 150 Watt LED/CFL; 2 amp ballasts.

This single-pole switch works best in smaller rooms and requires a ground wire.

Coordinating Wall Plate sold seperately (CW-1-WH).

  • Brand: Lutron
  • -
  • Family: Maestro
  • -
  • Part No.: MS-0PS2-WH
  • -
  • Color: White
  • -
  • Width: 2.94 in.
  • -
  • Height: 4.69 in.
  • -
  • Input Voltage: 120
  • -
  • Load Rating: 250W
  • -
  • Load Type: Incandescent /


Corentium Home by Airthings, Radon Detector, USA version in pCi/L

Extremely accurate (±5%).

LCD display short term 1 day and 7 days, and long term 1 year average.

USA version in pCi/L.

Designed in Europe, and tested in Japan.

Unaffected by humidity, electromagnetic interference and dust.

The Corentium Home by Airthings radon detector is a state-of-the-art measuring instrument that combines ease of use and performance. The Corentium Home by Airthings radon gas detector allows you to take a reading of the radon levels and its LCD screen displays the average daily, weekly and long term concentrations. Powered by 3 standard AAA batteries, the radon monitor makes it easy to take measurements from one room to another in order to get an overview of the concentrations of radon in a home, workplace, school, a daycare centre or any other location. The Corentium Home by Airthings radon detector is also an essential tool to use when performing property inspections or when checking the operation of a radon mitigation system. The internal architecture of the Corentium Home by Airthings radon monitor comes from advanced technology normally reserved for commercial-type detectors. Particular attention has been paid to the quality and protection of the internal components, allowing the use of algorithms for signal analysis that are more sophisticated. The Corentium Home by Airthings radon gas detector quickly adapts to its environment and eliminates inaccuracies related to external factors, allowing it to obtain the best accuracy in its niche. The Corentium Home by Airthings radon monitor is guaranteed for one year and in normal home use, it requires no annual calibrations throughout its useful life, estimated at over 10 years.


Kidde Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA

Smart 2-in-1 Voice Alarm - Voice announces "Fire!" or "Warning! Carbon Monoxide".

Smart Hush - Nuisance alarms are silenced by pressing the hush button..

Battery Safeguard with Front Load Battery Door - Quick and easy battery replacement..

Test/Reset Button, LEDs, and Low Battery Warning.

Meets Underwriters Laboratories (UL) UL2034 and UL217 compliance..

The Kidde KN-COSM-BA battery-operated carbon monoxide and smoke alarm combines two important safety devices into a single unit.

This alarm includes a voice warning system that makes four announcements: fire, carbon monoxide, low battery, or smart hush activation. The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. This unit uses three AA batteries, protecting you and your family even during a power outage. This alarm uses ionization-sensing technology for the smoke alarm. Ionization-sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Photoelectric-sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help ensure maximum detection of the various types of fire that can occur within the home.

KN-COSM-BA Battery-Operated Combination Smoke and CO Alarm at a Glance Employs both smoke and carbon monoxide sensors Stand-alone battery-operated alarm is easy to install throughout the home, as no wiring is needed Features a hush button to silence the alarm for non-emergency situations like a smoky dinner Voice alarm eliminates confusion and clearly warns of smoke/CO danger or low battery Protects from two different hazards, smoke and carbon monoxide, and has a different voice warning for each hazard.

The battery-operated KN-COSM-BA offers easy installation.

Combination Smoke/Carbon Monoxide Alarm The Kidde combination carbon monoxide and smoke alarm includes a voice warning system that eliminates confusion and clearly warns you and your family of a smoke or carbon monoxide (CO) danger, of low battery, or of hush-mode setting.

Alarm Warnings Fire:

The red LED will flash and be accompanied by three long alarm beeps followed by a verbal warning message: "Fire! Fire!" The alarm will repeat the pattern until smoke is eliminated.

Carbon Monoxide:

Four short alarm beeps followed by a verbal warning: "Warning--carbon monoxide!" This continues until the unit is reset or the CO is eliminated.

Low Battery:

One chirp followed by warning: "Low battery." The red LED light will flash. This pattern will continue every minute for the first hour. After the first hour, the red LED light will flash once every minute and will be accompanied by the chirp sound. The low-battery warning will only sound once every 15 minutes.

Voice Hush Indication:

"Hush activated" and "Hush canceled" voice announcement. Peak Level Memory: If the alarm had detected a CO level of 100ppm or higher when the test/reset button is pressed, the unit will announce, "Carbon monoxide previously detected" to warn of the CO incident. Trademarked Hush Feature for Convenience By pressing the hush button, you can easily and safely silence nuisance alarms caused by non-emergency situations, such as overcooked dinners. This feature desensitizes the alarm for approximately 10 minutes. If the smoke is not too dense, the alarm will silence immediately, the unit will verbally announce, "Hush mode activated," and the green LED will flash every two seconds for approximately 10 minutes.

Reliable Battery Power, Indicator LED, Test Feature and Low-Battery Warning The battery-powered alarm provides continuous protection, even during power outages. Because this alarm only helps protect you if it's working, this unit features a red LED that flashes every 30 to 40 seconds to indicate that it is operating correctly.

For additional peace of mind, the alarm also contains a test/reset button that enables you to periodically test its circuitry and horn. If any form of battery failure is detected, the red LED light will flash and the unit will chirp one time, followed by the warning message, "low battery." This cycle will occur once every minute, and will continue for at least seven days. Seven years after initial power up, this unit will chirp" every 30 seconds.

This is an operational end-of-life feature that will indicate that it is time to replace the alarm. UL 2034, the independent standard applicable to CO alarms, requires CO alarms to have an end-of-life warning. This requirement went into effect in March 2007, meaning any CO alarm manufactured after April 2007 with a UL listing must have this feature. Most states that require CO alarms in residential dwellings mandate that the alarm meet the UL 2034 standard.

The unit measures just 5.75 inches in diameter and 1.7 inches deep, and it features a neutral white finish. It includes tamper-resistant features to deter vandalism or theft. This combination smoke/CO alarm is UL listed, so you can be confident of its quality, and it is backed by a ten-year limited warranty.

About Kidde:

A UTC Fire and Security Brand Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb detector lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.

What's in the Box:

Combination smoke and carbon monoxide alarm with mounting bracket and mounting hardware, three AA batteries, a and bilingual (English/Spanish) user's manual.


First Alert SA303CN3 Battery Powered Smoke Alarm with Silence Button

Battery-powered smoke alarm with silence/test button.

Features convenient silence/test button, blinking power light, 85-decibel alarm.

Also includes side battery drawer and missing battery guard.

Low battery warning and tamper resistant.

9-volt battery included; 5-year limited warranty.

Working smoke alarms cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you know about a fire, the faster you can start moving your family outside. The First Alert smoke alarm with silence button allows you to both silence a non-threatening alarm and to test the unit's functionality. It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power. The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs.


Amir Motion Sensor Light, Cordless Battery-Powered LED Night Light, Stick-anywhere Closet Lights Stair Lights, Safe Lights for Hallway, Bathroom, Bedroom, Kitchen, etc. (White - Pack of 6)

Super-bright LED Bulbs - Up to 20 Lumen output, 6 pcs super bright SMD 2835 LED; bright enough to make sure you never stumble in the dark.

PIR Motion & Light Sensor - Auto-on within 10 feet, auto-off after 20 seconds of no motion detected helps prolong battery life. It will turn on only when it is dark and when motion is detected.

Easy Installation - Simple to install, no hard-wiring. With 3M adhesive pads and built-in magnet, you can stick on anywhere you like.

Battery Operated - Powered by 3PCS AAA batteries (not included) for coreless installation. To provide you with illumination in areas that have limited or no access to electricity.

Lightweight & Portable Design - Circle shaped and compact sized make it an ideal night light for your bedroom, bathroom, stairs, hallway, kitchen, closet, etc..

With Amir Motion Sensor Lights, you can…
- Say good bye to bumping into stuff in the dark.
- Comfort kids who are afraid of the dark
- Cheaper to run than ceiling lightsAmir Motion Sensor Lights act like little “guardians”, provide automated, hands-free way to protect your homes indoors and outdoors. Light up your bedroom, stairs, hallway, closet, or entryway to your home where the light switch is just too far from the door. Don't leave lights on needlessly running up the electric bill.With easy installation, it mounts in seconds. No hammers, drills, or tools required. Simply use the double-sided adhesive pads or stick to any metal surface with the built-in magnet.Note:1. Please make sure that the anode and cathode of battery has been installed correctly.
2. Please do not install 2 lights too close from each other. The lighting may cause the other one DOES NOT work.
3. If you use Alkaline battery first and then change to zinc-manganese dry battery, the lights might not work as the zinc-manganese dry battery is shorter than the Alkaline battery.
4. The sensor light might not work if you use the infrared heater in winter. The infrared will cause failure of the sensor. However, the light will get back to work in 30 minutes after turning off the heater.Specifications:● 1.5v, 0.3w
● Sensitivity: 3 meter Distance
● Sensor Range: 120 degrees
● Operating temp: -20°C-40°C
● LED Qty: 6 LED
● Light color: Pure White
● LED life: 50,000 hours or more
● Mounting: Tape or Magnet
● Product Diameter: 3.15 in
● Thickness: 0.87 inPackage includes: 6 x Motion Sensor LED Night Light
6 x 3M double-sided adhesive pads
1 x User ManualSeller Warranty Policy:● 45-Day Money Back Guarantee
● 12-Month Replacement Warranty
● 7/24 Online Customer Service
● Lifetime Support GuaranteeGCID: AMIR


Z-wave Plus Easy Install with PET Immunity Motion Detector with PET Immunity, White (PIRZWAVE2.5-ECO)

Premium components provides accurate and instant motion detection in both Automation mode and security mode.

Overcomes potential interference of pets as large as 55 lbs, saving nuisance false alarms..

Easy installs with included flush mount and corner mount wall brackets and begins to learn as Soon as batteries power it up..

Five Year battery Life and discrete design keep it out of sight and out of mind when not on alert..

Works with Most brands of Z-wave and Z-wave plus home security hubs..

From the leaders in zwave plus technology, the ecolink motion detector allows you to improve the safety and security of your home and family easily and effectively. Built with premium components for better performance, these motion sensors provide instant and reliable performance as part of your security system. Dimensions: 3.5”L x 2.3”W x 1.8”H.


D-Link DCH-S160 mydlink Wi-Fi Water Sensor

Receive push notifications when water is detected via mobile app.

Built-in alarm will sound (up to 70 dB) and LED will blink red when water is detected.

Detachable cables included (3.5 ft. non-sensing and 1.65 ft. sensor cable).

Create rules via mydlink mobile app to enable interaction with additional mydlink home automation products such as motion sensor, Wi-Fi cameras, Smart Plugs and more..

Easy set up with the mydlink Home app.

IFTTT compatible - Pair with any IFTTT enabled product or app to connect your Wi-Fi Water Sensor in fun and useful ways.

The DCH-S160 mydlink is a smart wireless water sensor that helps keep your home safe. It will help you detect water damage before serious problems occur. Get alerted when water is detected in basements, sinks, near a water heater, dishwashers, in a bathroom or anywhere there might be moisture. The DCH-S160 also works with the DCH-S220 mydlink Wi-Fi Siren to increase alarm volume and range. Get push notifications with the mydlink Home app on your smartphone so you always know what is going on at home from anywhere.


Samsung SmartThings Water Leak Sensor

Get an immediate alert on your smartphone at the first sign of excess water..

Trigger a light or siren to turn on to alert you if water is detected where it doesn't belong..

Place the sensor beside the sump pump in your basement to be notified if the sump pump fails..

Additional Requirements: Samsung SmartThings Hub.

The SmartThings Water Leak Sensor can monitor moisture to send you alerts that could prevent a leak from becoming a flood. It can also monitor temperature.It requires the SmartThings Hub


Glentronics, Inc. BWD-HWA Basement Watchdog Water Sensor and Alarm

Detects unwanted water only 1/32" deep.

Alarm is placed on the floor near water heaters.

Sensor has a 6' wire.

Loud 110Db alarm.

Battery saver feature keeps batteries fresh longer.

Requires a 9-volt alkaline battery (not included).

Battery-saver feature only uses energy when the alarm is sounding for a long battery life.

Use to detect leaks before costly water damage is caused.

Detects as little as 1/32 -Inch of water to offer an effective early warning system.

Loud 110 dB alarm can be heard throughout the house.

Basement watchdog, water alarm, detects unwanted water only 1/32" deep, alarm is placed on the floor near water heaters, sump pump pits, washing machines and under sinks, sensor has a 6' wire so it can be extended into a sump pump.