Catalog   /   Home & Renovation   /   Security Systems   /   Security Sensors

Security Sensors

 prices on 528 models
Show
Add an extra level of protection to your home with Ring Alarm Home Security System Contact Sensors. Attach a sensor to any window or door within your home and immediately receive a notification when they open, even if you're at work. Sends instant alerts to your phone or tablet whenever a door or window is opened in your home. Monitor from your iOS or Android device. Attach the sensor to any door or window and connect it to the Ring Alarm Base Station (sold separately). Backed by the manufacturer�s 1-year limited warranty. Ring Alarm and all Ring Alarm accessories require a subscription for digital notifications, in-app features, digital arming/disarming, and integration with other Ring, E…
Price from $45.09 up to $66.44 
Compare prices and buy Ring Alarm Home Security System Contact Sensors, Pack Of 2 Sensors 4SD2SZ-0EN0
$45.00
$66.00
Compare prices2
Secure your home with the Ring® Alarm Window and Door Contact Sensor, 4SD1SZ-0EN0 (2nd Gen). Receive instant mobile alerts whenever doors and windows open, providing peace of mind and enhanced security. The sensor is now smaller, offering increased placement options, and installation is a breeze with no tools required. Mount it effortlessly to door and window frames, and enjoy the convenience of two included 3V CR2032 batteries. Please note that the Ring Alarm Base Station (sold separately) is required for optimal functionality. Elevate your home security with the reliability and ease of use provided by the Ring® Alarm Window and Door Contact Sensor.
What's in the Box?


- Ring® Alarm W…
Price from $14.99 up to $48.81 
Compare prices and buy Ring ® Alarm Window and Door Contact Sensor N30467184987 (2nd Gen)
$15.00
$20.00
$20.00
$20.00
$22.00
Compare prices6
Tired of getting inaccurate weather news from the usual apps? It’s time to get your weather information straight from your own backyard with the AcuRite Optimus 6-in-1 weather station. This professional weather station conveniently keeps you informed of your hyperlocal weather conditions, whether you’re at home or away. Say goodbye to wrong weather reports and hello to reliable, personalized weather insight to gain the ultimate peace of mind! The AcuRite Optimus provides precise temperature, humidity, rainfall, wind speed, wind direction, and lightning data on a high-definition LCD in-home display. The low-profile design of the outdoor sensor brings a level of high-tech and sleekness to any …
$229.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Stop trusting unreliable weather apps and vague forecasts and start getting hyperlocal weather information delivered to your fingertips right from your own backyard. The AcuRite Optimus provides precise temperature, humidity, rainfall, wind speed, wind direction, and lightning data on a high-definition TFT in-home display. The low-profile design of the outdoor sensor brings a level of high-tech and sleekness to any outside space, and the photo-quality display features customizable weather windows to highlight the information you care about most. With seamless smart home integration, ask your device to read aloud your Optimus-recorded data or set up custom rules to better manage weather-dependent …
$229.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
The AcuRite Iris Home Weather Station with Built-In Barometer and Direct-to-Wi-Fi Color Display (01547M) provides indoor and outdoor temperature and humidity measurements, wind speed and wind direction readings, rainfall totals, and barometric pressure information. The sleek black display with ultrathin, geometric-style fonts will coordinate perfectly with your living room, kitchen, or office décor. Wi-Fi capability allows for easy remote monitoring through the AcuRite NOW app — so you can view your weather on the go, say from your summer home or RV campsite! Easily connect to Weather Underground to share local reports and use Amazon Alexa or Google Assistant for hands-free hyperlocal weather ins…
Price from $169.99
Compare prices and buy AcuRite Iris Pro with WiFi for Remote Monitoring: Indoor Outdoor, Barometric, Outdoor Thermometer
$170.00
$170.00
Compare prices2
This AcuRite Iris (5-in-1) home weather station comes with a wireless mini (5-inch) display to provide you with a wealth of hyperlocal weather knowledge! Boost your home, workspace, or campsite and receive essential weather information, the indoor temperature, and the time and date.
Price from $99.99
Compare prices and buy IRIS AcuRite - Weather Station - White/Black 01122M (5-in-1)
$100.00
$100.00
$100.00
Compare prices3
Track multiple weather conditions at your precise location instead of relying on weather data usually taken from your nearest airport. The AcuRite Iris (5-in-1) outdoor weather sensor boasts a rugged, weatherproof construction and an automatic, self-draining rain gauge. It features dual solar cells that power an internal fan to maximize ambient temperature accuracy at all hours of the day. For additional accuracy, the temperature, humidity, and barometric pressure measurements can be manually calibrated if sensor placement or environmental factors impact data accuracy.
$189.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Optimize your home with this AcuRite digital weather forecaster! The color display provides hyperlocal weather information, including a personalized forecast, outdoor temperature with high and low records (that reset at midnight), and barometric pressure. The included outdoor wireless sensor combines elevation with barometric pressure measurements to provide a weather forecast 12 hours from current conditions specific to your exact location. The in-home weather station display also provides the indoor temperature, indoor humidity with a comfort meter, today’s date, and the current time. The backlit LCD screen can be set to 100%, 60%, or 15% brightness or to the auto-dim mode, which dims the sc…
$42.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Our wireless weather station monitors temperature, humidity, rainfall, wind speed, wind direction, sunlight, etc—all data at a glance with a 7.5 in display. With a 492 ft (150 m) wireless transmission range and IPX6 waterproof outdoor sensor, it is ideal for rooftops, yards, farms, and more.
Price from $100.90 up to $105.90 
Compare prices and buy Vevor 7-in-1 Wi-Fi Weather Station with APP, 7.5-Inch VA Display, Wireless Solar Powered Outdoor Sensor, Rain Gauge, Indoo
$101.00
$106.00
Compare prices2
Check even more movement with more Tags. Tags can be placed anywhere to detect movement, making them perfect for monitoring doors and drawers. Each tag is shower-proof and functions as an alert button when pressed. Tags can also be used as a fall detection pendant using the lanyard. Easily connect them to your Nomo Essential Care Kit to ensure comprehensive safety and convenience, and keep track of more movements to stay connected with your loved ones.
$39.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Nomo is for anyone you care for, or care about. Let us show you what you need to check on your loved ones, no matter their home size, age, or level of mobility. With Nomo’s customizable system, we can find your perfect fit. Satellites connect seamlessly through the hub and can be plugged into any electrical outlet. They use similar sensor technology as the hub, collecting sound and motion data while transcribing them to the Nomo app in real-time.
$69.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Expand Fosmon WaveLink Doorbell Systems. Perfect solution for expanding your Fosmon Doorbell System with this additional door sensor transmitter. Compatible with:. 51004HOM - Fosmon WaveLink Wireless Entry Alert Doorbell. 51005HOM - Fosmon WaveLink Wireless Motion Doorbell Alert Sensor. 51007HOM - Fosmon WaveLink Wireless Door Open Chime. 51009HOM - Fosmon WaveLink Wireless Entry Alert Doorbell (Black). Magnetic Door Sensor. With your Fosmon WaveLink doorbell system installed, this magnetic door sensor activates when the magnetic stripe is separated. This transmits a signal to the plug-in portable receiver (not included) and alerts you with a ringtone every time the door is opened. Modern and …
$10.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Nomo is for anyone you care for, or care about. Let us show you what you need to check on your loved ones, no matter their home size, age, or level of mobility. With Nomo’s customizable system, we can find your perfect fit. Satellites connect seamlessly through the hub and can be plugged into any electrical outlet. They use similar sensor technology as the hub, collecting sound and motion data while transcribing them to the Nomo app in real-time.
$39.99
BestBuy.com
Delivery: in USA
Report
Buy!
BestBuy.com
Illuminate your path to safety with the First Alert SM210L 10-Year Sealed Battery Smoke Alarm with Safety Path Light. The SM210L smoke alarm also features First Alert's Precision Detection advanced sensing technology and meets new industry standards. The 10-year battery means no battery replacements for a decade.
Price from $45.99 up to $47.59 
Compare prices and buy First Alert 10 Year With Path Light Battery-Powered Photoelectric Smoke Detector 1 pk 1046747
$46.00
$48.00
Compare prices2
The First Alert SM210V 10-Year Sealed Battery Smoke Alarm with Voice & Location Alerts helps guide your escape to safety. Utilizing First Alert's Precision Detection advanced sensing technology that complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency, the SM210V provides reliable and convenient protection.
Price from $45.99 up to $49.67 
Compare prices and buy First Alert 10 Year Voice and Location Battery-Powered Photoelectric Smoke Detector 1 pk 1046755
$46.00
$47.00
$50.00
Compare prices3
Specifications Model DCR 009Working Temperature 20 85℃Working Voltage rated 4 8 12VWorking Current 10 496maSize 100 100 40mmPower Supply Mode USB5V 1ACommunication Protocol WIFI 2 4GHZ Zigbee3 0Color White ShellMaterial ABSDetection Range formaldehyde 0 10 00mg m3 Detection Range voc 0 99 9ppmDetection Range Co2 0 1000ppmDetection Range temperature 0 60°CDetection Range humidity 0 95 Detection Range PM2 5 0 1000ug m3Features 1 Monitors six air quality indicators TVOC PA CO₂ PM2 5 Temperature and Humidity for a comprehensive view of indoor air status 2 Real time data reporting and visual display for immediate air quality insights 3 Intelligent linkage with …
$24.99
Banggood.com
Delivery: in USA
Report
Buy!
Banggood.com
Specification Input Voltage AC 85 250V 50 60HzOutput Voltage AC 85 250V 50 60HzMaximum Current 16AMaximum Load 3000W Resistive Wireless Protocol ZigbeWorking temperature 20C 80℃Working humidity 80 Material ABSSize 93 55 31mmFeatures 1 APP Remote Control Operate through Tuya Smart or Smart Life apps for real time monitoring and automation settings 2 TemperatureHumidity Monitoring Accurately monitor and configure temperature and humidity levels for various environments through connected sensors 3 TimerSchedule Automation Set schedules and countdown timers for custom on off switching 4 Smart Scene Creation Configure multiple actions and group controls to suit specific home sc…
$15.99
Banggood.com
Delivery: in USA
Report
Buy!
Banggood.com
24 more item(s)