Sensor Detector
572,186 results

Item Price Seller
1PC 5V DC MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module New

1PC 5V DC MQ-2 Smoke LPG Butane Hydrogen Gas Sensor Detector Module New

$1.00Aliexpress
100M Wireless Driveway Motion Sensor Detector Alarm Alert System + Adapter

100M Wireless Driveway Motion Sensor Detector Alarm Alert System + Adapter

Category: Sensors & Motion Detectors
$15.99Ebay
5Pcs Mini IR Infrared Pyroelectric PIR Body Motion Human Sensor Detector Module

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

$8.56Aliexpress
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
Wireless Driveway Motion Sensor Detector Alarm Alert System 1 Receiver+2 Sensors

Wireless Driveway Motion Sensor Detector Alarm Alert System 1 Receiver+2 Sensors

Category: Sensors & Motion Detectors
$23.5Ebay
5pcs/lot HC-SR501 HCSR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector Module

5pcs/lot HC-SR501 HCSR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector Module

$3.90Aliexpress
5 pcs HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor Detector Ranging Module DC 5V

5 pcs HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor Detector Ranging Module DC 5V

$4.08Aliexpress
5Pcs Hot Sale High Quality Mini IR Infrared Pyroelectric PIR Body Motion Human Sensor Detector Module

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

$8.56Aliexpress
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

$8.33Aliexpress
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
Hot sale Brand New 25A Dusk till Dawn Automatic Photocell Light Sensor Detector Switch Lights switch controller waterproof

Hot sale Brand New 25A Dusk till Dawn Automatic Photocell Light Sensor Detector Switch Lights switch controller waterproof

$9.25Aliexpress
LJ12A3-4-Z/BX Inductive Proximity Sensor Detector Detection LJ12A3-4-Z/BX Proximity Sensors Switch NPN DC6-36V 3D Printer CNC

LJ12A3-4-Z/BX Inductive Proximity Sensor Detector Detection LJ12A3-4-Z/BX Proximity Sensors Switch NPN DC6-36V 3D Printer CNC

$2.32Aliexpress
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
TOPGREENER TDOS5 Motion Sensor Light Switch PIR Occupancy Detector

TOPGREENER TDOS5 Motion Sensor Light Switch PIR Occupancy Detector

Category: Sensors & Motion Detectors
$16.99Ebay
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
Security Infrared Driveway Wireless Motion Outdoor Alarm Sensor Alert Detector

Security Infrared Driveway Wireless Motion Outdoor Alarm Sensor Alert Detector

Category: Sensors & Motion Detectors
$16.99Ebay
Hot Wireless Home Office Security Motion Sensor IR Detector Remote Alarm System

Hot Wireless Home Office Security Motion Sensor IR Detector Remote Alarm System

Category: Sensors & Motion Detectors
$7.84Ebay
White 15 Bulb LED Motion Sensor Lamp Security Night Light Detector Auto Wireless

White 15 Bulb LED Motion Sensor Lamp Security Night Light Detector Auto Wireless

Category: Night Lights
$8.99Ebay
Wireless HomeSafe Security OUTDOOR Motion Detector Sensor FOR Barking Dog Alarm

Wireless HomeSafe Security OUTDOOR Motion Detector Sensor FOR Barking Dog Alarm

Category: Sensors & Motion Detectors
$26.48Ebay
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
General Tools PNG2000A Natural Gas Detector Pen

General Tools PNG2000A Natural Gas Detector Pen

Category: Tools & Home Improvement
$24.97 - $149.96Amazon
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
$29.87 - $149.96Amazon
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
$17.47Amazon
D-Link DCH-S160 mydlink Wi-Fi Water Sensor

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

Category: Electronics
$50.85Amazon
Lutron MS-OPS2H-2-WH Maestro 2 Amp Single Pole Occupancy Sensor Switch (2 Pack), White

Lutron MS-OPS2H-2-WH Maestro 2 Amp Single Pole Occupancy Sensor Switch (2 Pack), White

Category: Tools & Home Improvement
$35.99 - $40.00Amazon
Visonic MCT-340 E Wireless Door Window Sensor 2.4ghz ZigBee - Requires Samsung SmartThings Hub

Visonic MCT-340 E Wireless Door Window Sensor 2.4ghz ZigBee - Requires Samsung SmartThings Hub

Category: Electronics
$17.99 - $149.96Amazon
Holan Solar Lights, 12LED Waterproof Solar Motion Sensor Lights Solar Powered Motion Detector Lights for Garden, Fence, Patio, Driveway

Holan Solar Lights, 12LED Waterproof Solar Motion Sensor Lights Solar Powered Motion Detector Lights for Garden, Fence, Patio, Driveway

Category: Tools & Home Improvement
$6.99 - $40.00Amazon
Glentronics, Inc. BWD-HWA Basement Watchdog Water Sensor and Alarm

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

Category: Tools & Home Improvement
$5.60 - $11.97Amazon
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
$149.96 - $199.95Amazon
Ecolink Intelligent Technology Z-Wave Easy Install, Battery Operated, Door/Window Sensor, White & Brown (DWZWAVE2-ECO)

Ecolink Intelligent Technology Z-Wave Easy Install, Battery Operated, Door/Window Sensor, White & Brown (DWZWAVE2-ECO)

Category: Electronics
$22.99 - $40.00Amazon

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.

Intelligent sensing technology reduces non-emergency or nuisance alarms.

Operates on 2 AA batteries (included).

Detects both flaming and smoldering fires with dual sensors.

Emits a loud 85 dB alarm for ample warning.

SA320FF designates SA320CN package in Frustration Free 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.


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.


Visonic MCT-340 E Wireless Door Window Sensor 2.4ghz ZigBee - Requires Samsung SmartThings Hub

Monitor your windows and doors | Requires Samsung SmartThings Hub and SmartThings app | INSTRUCTIONS BELOW.

Thermometer feature reports temperature | Battery Life Expectancy: 3 years (for typical use).

Very small, thin form factor able to blend into the decor of most installations | Easy installation using high-strength 3M mounting tape (included).

Wide Gap performance able to be installed in tough situations where magnet gap is over 1" | Virtually unnoticeable, with sleek design.

Operating Temperature 0°C to 55°C | Dimensions 66x25x10mm.

IMPORTANT NOTICE: (1) Packaging now includes a link to instructions on connecting your sensor to Samsung SmartThings, device will not pair with SmartThings out of the box and requires a device handler. One time set up on your 1st sensor and after that they connect normally. (2) Visonic MCT-340 E sensors are NOT compatible with XFINITY Home or Wink Hub systems


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.


Lutron MS-OPS2H-2-WH Maestro 2 Amp Single Pole Occupancy Sensor Switch (2 Pack), White

Motion Sensor Switches automatically turn 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).

Let Lutron's Maestro Occupancy Sensing Switch turn the lights on and off for you. This 2 pack of Lutron's Maestro Occupancy Sensing Switches is a simple way to save energy and add light automation to any room of your home. Install a Maestro Sensor and lights turn on when you enter the room, and then turn off automatically after you leave. This sensor features XCT Sensing Technology which detects fine motion, such as typing at a desk or reading, ensuring lights do not turn off inadvertently. Equipped with ambient light detection, you can customize your sensor to detect daylight so lights don't turn on with enough natural light in your room. Install one sensor in the bathroom, and one in the laundry room for added convenience and energy savings. Maestro Sensors work with any bulb type, including CFL and LED, and they match the rest of Maestro's product family line to complete a coordinated look in your home. Coordinating Claro wallplates and accessories sold seperately.


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.


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.


General Tools PNG2000A Natural Gas Detector Pen

Handheld natural gas detector is sensitive, reliable and easy to operate; detects LNG, LPG, CH4, methane, and butane gas.

Gas detector has an LED light that indicates how severe the gas leak may be; green signals on, yellow indicates 200-Ppm, red indicates 500-Ppm.

Gas sniffer comes has catalytic combustion sensor; multiple home and commercial uses for detecting the unseen presence of dangerous natural gases.

Gas leak detector comes pre-calibrated; the detection tool is ready for us right on arrival.

Unlike other natural gas leak detectors ours is compact and lightweight and can be taken on the go.

  • Overall Size: 7-19/32" Long X 1-13/64" Dia.
  • Ideal For Detecting Leaks Of Natural Gas (Methane), Propane Or Butane From Plumbing And Appliances
  • Sensitive, Reliable And Easy To Use
  • Fast Response Time, Under 5 Seconds
  • Different Alarms For Leaks, Sensor Faults And Low Battery
  • Automatically Sets Zero Measurement Baseline Upon Startup In Fresh Air
  • Natural Diffusion Sampling Technique
  • Power Source: 2 AA Batteries (Included)
  • Comes With Wrist Strap And Instruction Booklet


Ecolink Intelligent Technology Z-Wave Easy Install, Battery Operated, Door/Window Sensor, White & Brown (DWZWAVE2-ECO)

Features industry leading Rare Earth Magnets that allow for up to a 5/8 inch gap , which makes it perfect for double hung or commercial windows..

Easy installation by simply pulling the battery tab to begin the learning process..

Both white and brown plastic casing included to match any décor..

Tamper sensing premium design outlasts the competition and boasts a battery life of up to 5 years..

Works with most brands of Z-wave home security hubs..

From the leaders in Wave technology, the Eco link Door/Window Sensor allows you to improve the safety and security of your home and family easily and effectively. Built with premium components, including Rare Earth Magnets for better performance, these entry/window sensors provide instant and reliable performance as part of your security system. Dimensions: 3.35”L x .97”W x .93”H.


Holan Solar Lights, 12LED Waterproof Solar Motion Sensor Lights Solar Powered Motion Detector Lights for Garden, Fence, Patio, Driveway

【Please Note】- For the first time use, please click the on/off switch with the pin and then charge the solar product by placing it under direct sunlight for 6-8 hours. This Solar Light has only ON/OFF mode, NO DIM MODE. It will only be activated after movement is detected in dark then auto turns on. After lighting around 10 to15 seconds, it turns off automatically.

【Powerful Sensor Ball Head】- We have updated sensor ball head, thus getting a longer sensor length of 10-26 feet with a 120 degree sensing angle..

【Waterproof and Durable】- IP64 Water resistant and heat-resistant. Built with two layers and a tightly-sealed loop to withstand years of use. Always illuminate your way home..

【Easy Installation & Eco Friendly】- Solar powered outdoor light, no electricity required. You can simply mount on the wall or fence with included screws, no wiring necessary..

【Automatic Lighting】- Auto on at night / auto off at sunrise; Bright light activates when sensing motion at night..

【High performance-price ratio choice】-- Top rated ultra bright LED solar motion lights with reasonable price.This will be a great outdoor light to illuminate your way home..

Holan - Match Your Gorgeous Life

By FC and RoHS certification - safe and secure.

Still looking for something to light up your driveway --- Here the Holan solar lights will be your best companion! 

Note: 
●For the first time use, Please charge the solar product by placing it under direct sunlight for 6-8 hours.
●This Solar Light has only ON/OFF mode. NO DIM MODE. It will only be activated after movement is detected in dark then auto turns on. After lighting around 15 seconds, it turns off automatically   Specifications:
1.Solar panel: 0.65W,17% efficiency
2.Li-ion battery: 1200mAh 
3.LED:1W,6000K-6500K,160Lumens
4.Solar charging time: 6-8 hours 
5.Product Dimension: 3.5*4.5*1.5 in
6.Net Weight: 7oz(200g)
7.Waterproof grade: IP64
8.Solar panel life span: 5 years; LED Life Span: 50,000 hours

Package Include: 
1 x Holan Solar Powered LED Light 
1x Holan Key pin
1 x Screw Set 
1 x Holan Expansion pillar-hinge 
1 x Holan User Manual

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*30-Day Money Back Guarantee
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