• In Stock
  • Sold by Newegg
  • New
Brands
Show More
Price
Show More
Protocol
Type
Show More
Amazon Alexa Compatibility
Google Assistant Compatibility
Apple HomeKit Compatibility
App-Enabled
Sold by
All Top Brands
Availability
Condition
Current Promotion
Discount
Useful Links
Customer Ratings
  • Featured Brands

    See Deals from TP-Link
Sort By:
View:
Natural Gas Leak Detector - Propane Leak Detector with 11-Inch Gooseneck for Natural Gas Detectors, Gas Detector Sniffer with Audible & Visual Alarm for Home Combustible Gas Propane Methane
Quick View
Natural Gas Leak Detector - Propane Leak Detector with 11-Inch Gooseneck for Natural Gas Detectors, Gas Detector Sniffer with Audible & Visual Alarm for Home Combustible Gas Propane Methane
  • Brand: Povlen
  • Dimensions: 1.33 in x 2.08 in x 6.5 in
  • Weight: 0.4 lb
  • Package Contents: 1 × CGD902A natural gas detectors for home, 2 × batteries, 1 × storage bag and 1 × user manual
  • Model #: 361964239243
  •  
  • $63.99 
  • Free Shipping
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
Quick View
  •  
  • $65.99 
  • Free Shipping
Temp Tracker Probe Wi-Fi Alert System with The Bridge Gateway and a Temperature Probe Sensor with Ambient Temperature and Humidity
Quick View
Temp Tracker Probe Wi-Fi Alert System with The Bridge Gateway and a Temperature Probe Sensor with Ambient Temperature and Humidity
  • Brand: Emerson
  • Part Number: X100-TP-01
  • Type: clock
  • Specifications: BRIDGE; 1 Temp Probe, 2.48 L x 1.79 W x 5.35 H inches, 15.5 L x 16.5 W x 18.9 H centimeters, 0.59 kilograms, La Crosse Technology, X100-TP-01, Medium, false, true, La Crosse Technology, Ltd., 2025-11-20T21:09:16.547Z, 1
  • Model #: 930106994682
  •  
  • $80.99 
  • Free Shipping
Natural Gas Leak Detector, Portable Gas Sniffer with Audible & Visual Alarm, for Combustible Gas Like Methane, Propane with 2 Batteries & Carrying Pouch Black
Quick View
  •  
  • $19.99 
  • Free Shipping
Portable Carbon Monoxide Detectors for Travel 3-in-1 Square Carbon Monoxide Monitor with 43 Detection Holes, RV CO Detector Alarm Temp/Humidity Sensor for Home, Camping & Travel Tent Car
Quick View
  •  
  • $37.69 
  • Free Shipping
Digital Alarm Clock, with Wooden Electronic LED Time Display, 3 Alarm Settings, Humidity & Temperature Detect, Wood Made Electric Clocks for Bedroom, Bedside (Black)
Quick View
  •  
  • $39.99 
  • Free Shipping
Smart Motion Sensor, WiFi PIR Motion Sensor for Alarm System, Mini Infrared Motion Sensor with App Remote Monitoring, Triggering Lights and Scenes.1 PCS
Quick View
Smart Motion Sensor, WiFi PIR Motion Sensor for Alarm System, Mini Infrared Motion Sensor with App Remote Monitoring, Triggering Lights and Scenes.1 PCS
  • Brand: Emerson
  • Part Number: P08
  • Specifications: 2 L x 4 W x 1 H centimeters, 0.05 kilograms, 8 meters, Wall Mount, Battery Powered, AAA, Motion Detectors, P08, QXMH, 1 PCS
  • Features: Wall Mount, 8 meters, true
  • Model #: 899463433647
  •  
  • $25.59 
  • Free Shipping
3 Pack Carbon Monoxide Detector LCD Screen Real-Time Concentration Battery Fault LED 60-Second Self-Check History Alarm Peak Record Portable Travel Van Life RV Camping Hotel Home Safety Pet Family
Quick View
  •  
  • $65.99 
  • Free Shipping
Freezer Door Alarm with 60 Second Delay, 2, 3, and 4 Minute Reminders, Refrigerator and Fridge Door Alarm or Chime, Low/Loud 80 to 110 dB  Compact Size. (White)
Quick View
Freezer Door Alarm with 60 Second Delay, 2, 3, and 4 Minute Reminders, Refrigerator and Fridge Door Alarm or Chime, Low/Loud 80 to 110 dB Compact Size. (White)
  • Brand: Emerson
  • Part Number: Fridggi-52321
  • Color: White
  • Specifications: FRIDGGI, Fridggi-52321, 2 L x 3.5 W x 6.5 H centimeters, 0.08 pounds, 4.5 volts, Battery Powered, Alkaline, 110 decibels, Contact Sensor, Door Mount, Mini Sensor
  • Model #: 163979278866
  •  
  • $34.91 
  • Free Shipping
Digital Alarm Clock, HD LED Display Alarm Clock, Simple Table Clock, Electronic Desk Clock, Dual Alarms, 12/24Hr, 4 Adjustable Brightness for Bedroom, Office, Table, Black
Quick View
Digital Alarm Clock, HD LED Display Alarm Clock, Simple Table Clock, Electronic Desk Clock, Dual Alarms, 12/24Hr, 4 Adjustable Brightness for Bedroom, Office, Table, Black
  • Brand: Emerson
  • Part Number: 109
  • Color: White
  • Specifications: Digital Alarm Clock, OUS-HY-WA109B, ORIA, 4.29 L x 1.5 W x 4.8 H inches, Corded Electric & Battery Powered, Tabletop, Digital, Alarm, LED Display
  • Model #: 799276895644
  •  
  • $29.99 
  • Free Shipping
Digital Calendar Alarm Clock - Dementia Clocks for Seniors, Non-Abbreviated Memory Loss Clock with Date and Time for Elderly (White)
Quick View
Digital Calendar Alarm Clock - Dementia Clocks for Seniors, Non-Abbreviated Memory Loss Clock with Date and Time for Elderly (White)
  • Brand: Emerson
  • Part Number: SSYA-DJU01
  • Color: White
  • Protocol: Wireless
  • Model #: 587261185722
  •  
  • $59.99 
  • Free Shipping
WiFi Motion Sensor Alarm: Smart PIR Motion Detector Alert with 110dB Siren & App Alerts, Tuya App for Remote Arm/Disarm, 4 Alarm Modes Home Security System Compatible with Alexa/Google Assistant
Quick View
WiFi Motion Sensor Alarm: Smart PIR Motion Detector Alert with 110dB Siren & App Alerts, Tuya App for Remote Arm/Disarm, 4 Alarm Modes Home Security System Compatible with Alexa/Google Assistant
  • Brand: Emerson
  • Part Number: Smart motion sensor
  • Specifications: 4.13 L x 2.28 W x 1.69 H inches, 95 grams, 12 meters, Wall Mount, USB powered, no battery option, battery not included, 14 degrees_fahrenheit, Detector, wifi motion sensor, Smart motion sensor, Gaoducash, White
  • Features: Wall Mount, 12 meters, false
  • Model #: 895191954944
  •  
  • $39.99 
  • Free Shipping
Projection Alarm Clock for Bedroom Ceiling, Digital Clock Projector with Weekday/Weekend Mode, Date, Temperature, Humidity, Type-C USB Charger, Snooze, Dual Alarms, Dimmer,12/24H
Quick View
  •  
  • $48.99 
  • Free Shipping
Combustible Gas Leak Detector - Rechargeable Gas Leak Detector, Natural Gas Leak Detector with 17-inch Probe for Checking Leaks of Natural Gas, Propane, Methane, Butane and Other Combustible Gases
Quick View
  •  
  • $71.99 
  • Free Shipping
Natural Gas Leak Detector, Portable Gas Sniffer with Audible & Visual Alarm, for Combustible Gas Like Methane, Propane with 2 Batteries & Carrying Pouch Black
Quick View
  •  
  • $24.99 
  • Free Shipping
Digital Alarm Clock with 2 USB Chargers,Bluetooth Speaker, FM Radio,Night Light,5-Level Dimmer,Adjustable Volume,12/24H,Snooze,Battery Backup,Loud Clock Radio for Heavy Sleepers Adults
Quick View
Digital Alarm Clock with 2 USB Chargers,Bluetooth Speaker, FM Radio,Night Light,5-Level Dimmer,Adjustable Volume,12/24H,Snooze,Battery Backup,Loud Clock Radio for Heavy Sleepers Adults
  • Brand: Emerson
  • Color: White
  • Protocol: Wireless
  • Specifications: Clock Radio, CR1025, Mesqool E-commerce Co.,Ltd, 3.31 L x 1.5 W x 2.32 H inches, Corded Electric, Tabletop, Digital, Adjustable Brightness, Adjustable Volume, Alarm, Charging Port, Radio
  • Model #: 152318336106
  •  
  • $47.99 
  • Free Shipping
Motion Sensor Switch,Plug in Sensor Light Control Switch,Featuring Human Body Sensing Mode and Always-On Mode,Motion Activated Plug Light for Corridor Garage Patio Aisle Room
Quick View
Motion Sensor Switch,Plug in Sensor Light Control Switch,Featuring Human Body Sensing Mode and Always-On Mode,Motion Activated Plug Light for Corridor Garage Patio Aisle Room
  • Brand: Emerson
  • Protocol: Wireless
  • Specifications: 1.97 L x 3.15 W x 1.97 H inches, 1.7 meters, Wall Mount, Corded Electric, battery not included, Plastic, Light, Lamp, L01, Dekeliy, Yellow, DEKELIY
  • Features: Wall Mount, 1.7 meters, false
  • Model #: 860537392908
  •  
  • $31.99 
  • Free Shipping
Entry Sensor E20, Dual-Side Detection, Convenient Bypass Button, Extended Battery Life, Long Communication Range, Requires HomeBase 2, 3, Mini, or Pro
Quick View
Entry Sensor E20, Dual-Side Detection, Convenient Bypass Button, Extended Battery Life, Long Communication Range, Requires HomeBase 2, 3, Mini, or Pro
  • Brand: Emerson
  • Part Number: T90E0
  • Protocol: Wireless
  • Specifications: 2.88 L x 1.54 W x 0.85 H inches, 656 feet, Wall Mount, Battery Powered, Lithium, 35 degrees_celsius, HomeBase 2, 3, Mini and Pro, eufy Entry Sensor E20, eufy Security Entry Sensor E20, T90E0, eufy, White, eufy Security
  • Model #: 678437378285
  •  
  • $47.69 
  • Free Shipping
Compact Digital Travel Alarm Clock with High/Low Volume Options,Simple to Set,Easy to Read,Bold Digits,Snooze Backlight,Quality Construction,2 AAA Battery Operated,Black
Quick View
Compact Digital Travel Alarm Clock with High/Low Volume Options,Simple to Set,Easy to Read,Bold Digits,Snooze Backlight,Quality Construction,2 AAA Battery Operated,Black
  • Brand: Emerson
  • Part Number: FG-T00-CA
  • Color: White
  • Specifications: 8541847887, FAMICOZY, 71 L x 21 W x 85 H millimeters, Battery Powered, Tabletop, Digital, 1 year warranty from date of purchase.
  • Model #: 233674799583
  •  
  • $29.99 
  • Free Shipping
LED Digital Alarm Clock for Bedroom, Plug in Clocks with Dual Alarm/Snooze/Temperature Waterproof 3 Brightness Level, Big Numbers Display and Battery Backup for Desk, Table, Office, Black
Quick View
LED Digital Alarm Clock for Bedroom, Plug in Clocks with Dual Alarm/Snooze/Temperature Waterproof 3 Brightness Level, Big Numbers Display and Battery Backup for Desk, Table, Office, Black
  • Brand: Emerson
  • Color: White
  • Specifications: SZ-836, SHENZHEN JIAMEI WEIYE TECHNOLOGY CO., LTD., 6.5 L x 1.5 W x 3 H inches, Corded Electric, Tabletop, Digital, Snooze Mode/Temprature, Adjustable Brightness, Double Bell, Large Display
  • Features: Snooze Mode/Temprature, Adjustable Brightness, Double Bell, Large Display
  • Model #: 705387610040
  •  
  • $16.99 
  • Free Shipping
Portable Carbon Monoxide Detector for Travel, Professional 4-in-1 Square CO Monoxide Monitor with Audible and Visual Alarm Rechargeable Backlit LCD Screen 300HR Standby for Home Car Camping Tent
Quick View
  •  
  • $53.99 
  • Free Shipping
Sensor E20, Dual-Side Detection, Convenient Bypass Button, Extended Battery Life, Long Communication Range, Requires HomeBase 2, 3, Mini, or Pro
Quick View
Sensor E20, Dual-Side Detection, Convenient Bypass Button, Extended Battery Life, Long Communication Range, Requires HomeBase 2, 3, Mini, or Pro
  • Brand: Emerson
  • Part Number: T90E0
  • Protocol: Wireless
  • Specifications: 2.88 L x 1.54 W x 0.85 H inches, 656 feet, Wall Mount, Battery Powered, Lithium, 35 degrees_celsius, HomeBase 2, 3, Mini and Pro, eufy Entry Sensor E20, eufy Security Entry Sensor E20, T90E0, eufy, White, eufy Security
  • Model #: 434311957384
  •  
  • $46.99 
  • Free Shipping
Digital Alarm Clocks for Bedrooms: Large Bold Number 5 Brightness Dimmer - Easy to Read Across The Room - 5 Alarm Sound 8 Night Light - Silver
Quick View
Digital Alarm Clocks for Bedrooms: Large Bold Number 5 Brightness Dimmer - Easy to Read Across The Room - 5 Alarm Sound 8 Night Light - Silver
  • Brand: Emerson
  • Color: White
  • Specifications: Sliver-U2, U2-SV-001, Odokee, 14 L x 3.81 W x 10 H centimeters, Corded Electric, Tabletop, Digital, Adjustable Brightness, Adjustable Volume, Charging Port, Large Display, Mood Light
  • Features: Adjustable Brightness, Adjustable Volume, Charging Port, Large Display, Mood Light
  • Model #: 212973181566
  •  
  • $32.99 
  • Free Shipping

Home smart sensors allow you to monitor the essential and necessary inner workings of your home and connect to the internal home environment. Whether you need to detect leaking water or gas pipes, or you want to monitor motion for security purposes, you can find a versatile range of smart sensors and home security alarms to keep your home safe and secure. Consider essential factors and features such as function, wireless capabilities, smart hub integration and ease of installation when shopping for this equipment.

Door and Window Sensors Indicate When There is Entry Into a Home

Door and window sensors attach to a window or door frame for easy installation, and billowing drapes or wandering pets are less likely to trigger them. Close the sensor circuit when you shut the door or window. Opening it triggers an alert, so you can take action. Most door and window sensors operate via a central hub, and you can purchase them individually or in packs to cover multiple doors and windows. Upgrade your home security by integrating them with smart door locks and access accessories for improved insight, control and flexibility. Smart door locks notify the user when an intruder opens the door, and some use access codes or biometrics to distinguish coming or going motion.

Smart Motion Sensors Show Movement Within a Space or Rooms

Motion sensors detect movement within a space by using infrared technology, triggering an alert to indicate movement. They are highly customizable to cater to individual safety and security needs. Sensors come in different types and sizes, and most are compatible with other technology ecosystems. Choose a motion sensor with a simple plug-and-play setup for quick and convenient pairing with smart hub kits and other apps. Some home smart sensors can track movement over time and trigger additional action, such as switching the lights on automatically. They work well to monitor the movement of children or an elderly relative.

Temperature Humidity Sensors Help Regulate Your Indoor Climate

Temperature humidity sensors are smart home automation accessories that track and record changes in the temperature and humidity conditions of any space. The sensors use Bluetooth®, Wi-Fi® or a cellular network connection, and you can use them to monitor indoor climate conditions remotely at any point in time. Choose a precise and accurate temperature humidity sensor with a buzzer, or one that seamlessly relays email and text alerts when you are not physically present. Most sensors have apps through which you can define logging and recording intervals and customize broadcast strengths. Select a sensor that works well in a range of environments, including cold rooms, greenhouses and cigar cabinets.

The Wi-Fi Water Sensor Provides Alerts of Flooding for Appropriate Action

The Wi-Fi water sensor lets you know in advance about a flooding threat so you can take corrective action to prevent costly home repairs and equipment damage. The unique sensing mechanism notifies the homeowner instantly when the water starts pooling.