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Buy Sensors & Alarms for Home Safety

Found 423 items
Smart Human Presence Sensor — Smart Home Security, Comfort Homeware

Fire Safety Equipment

(2)

Smart Human Presence Sensor Energy saving

$248.20
  • Specifications
  • Brand: Comfort Homeware
  • Technology: Millimeter radar
  • Connectivity: Wi-Fi, ZigBee
  • Compatibility: Smart home ecosystems
Digital Portable Oxygen Gas Detector — Gas Analyzers, TOMTOP JMS

Gas Safety Equipment

(2)

Digital Portable Oxygen Gas Detector Portable design

$171.41
  • Specifications
  • Brand: TOMTOP JMS
  • Detection Type: Oxygen (O₂)
  • Power Source: Rechargeable battery
  • Display: Color display
  • Accuracy: High
Multigas Monitor — Gas Analyzers, Zeblaze

Gas Safety Equipment

(2)

Zeblaze ST8990 Rechargeable battery

$140.85
  • Specifications
  • Brand: Zeblaze
  • Model: ST8990
  • Display: 4-inch LCD with backlight
  • Power: Rechargeable battery
  • Plug Type: European standard
Digital Carbon Monoxide Detector — Carbon Monoxide Detectors, Good Household Items

Fire Safety Equipment

(no rating)

Digital Carbon Monoxide Detector Digital display

$136.40
  • Specifications
  • Brand: Good Household Items
  • Detection Types: Carbon Monoxide, Smoke, Fire
  • Alarm Type: Sound
  • Display: Digital
  • Compatibility: Smart Home Systems
Wireless Flood Detector — Water Leak Detection Systems, Comfort Homeware

Water Leak Detection Systems

(2)

Comfort Homeware Doodle smart WiFi Smart HomeKit compatible

$126.04
  • Specifications
  • Brand: Comfort Homeware
  • Model: Doodle smart WiFi
  • Compatibility: Tuya Smart HomeKit
  • Connectivity: WiFi
  • Power Source: Battery
Static Drone Active Motion Sensor — Smart Home Security, Refreshing Home

Fire Safety Equipment

(1)

Refreshing Home Tuya Smart Human presence detection

$108.00
  • Specifications
  • Brand: Refreshing Home
  • Model: Tuya Smart
  • Connectivity: ZIGBEE, Wi-Fi
  • Detection Type: Human presence, Breath detection
  • Technology: Radar
4-in-1 Portable Gas Monitor — Gas Analyzers, TOMTOP JMS

Gas Safety Equipment

(2)

TOMTOP JMS SMART SENSOR Rechargeable battery

$106.08
  • Specifications
  • Brand: TOMTOP JMS
  • Model: SMART SENSOR
  • Detection Gases: H₂S, O₂, CO, LEL
  • Power Source: Rechargeable battery
  • Portability: Portable
Professional Water Quality Detector 3 in 1 pH/TDS/TEMP Controller — Multiparameter Measurement Devices, Kkmoon

Water Leak Detection Systems

(9)

Professional Water Quality Detector 3 in 1 pH/TDS/TEMP Controller Blue 3-in-1 functionality

$99.13
  • Specifications
  • Brand: Kkmoon
  • Functionality: pH measurement, TDS measurement, Temperature control
  • Plug Type: EU Plug
  • Color: Blue
Wi-Fi Water Leak Alarm — Water Leak Detection Systems, Comfort Homeware

Water Leak Detection Systems

(2)

Wi-Fi Water Leak Alarm White Wi-Fi connectivity

$95.89
  • Specifications
  • Brand: Comfort Homeware
  • Connectivity: Wi-Fi
  • Compatibility: Tuya smart home ecosystem
  • Color: White
  • Installation: Easy
Smart Door Sensor — Smart Home Security, Optimized General

Fire Safety Equipment

(1)

Optimized General Tuya WiFi white WiFi connectivity

$85.40
  • Specifications
  • Brand: Optimized General
  • Model: Tuya WiFi
  • Connectivity: WiFi
  • Compatibility: Smart Life APP
  • Color: white
  • Installation: Easy
Ultrasonic Wireless Smart Water Meter — Water Leak Detection Systems, TrendVibeCN

Water Leak Detection Systems

(no rating)

Ultrasonic Wireless Smart Water Meter Wireless connectivity

$77.63
  • Specifications
  • Brand: TrendVibeCN
  • Measurement Technology: Ultrasonic
  • Connectivity: Wireless
  • Compatibility: DN15 pipes
  • Use Case: Domestic
Wi-Fi Siren Alarm Sensor — Smart Home Security, Build My Home

Fire Safety Equipment

(1)

Wi-Fi Siren Alarm Sensor White Smart Life app compatible

$76.75
  • Specifications
  • Brand: Build My Home
  • Compatibility: Tuya Smart Life app, Alexa
  • Connectivity: Wi-Fi
  • Control: Voice control, App control
  • Color: White
Inductive Door Handle Alarm — Smart Home Security, Comfort Homeware

Fire Safety Equipment

(1)

Inductive Door Handle Alarm Wireless sensor technology

$73.50
  • Specifications
  • Brand: Comfort Homeware
  • Alarm Sound: 120 dB
  • Detection Type: Human body
  • Technology: Wireless sensor
  • Installation: Easy
Smart Door Window Sensor — Smart Home Security, Build My Home

Fire Safety Equipment

(no rating)

Build My Home Tuya Smart ZigBee Magnetic detection

$71.63
  • Specifications
  • Brand: Build My Home
  • Model: Tuya Smart ZigBee
  • Connectivity: ZigBee
  • Compatibility: Alexa, Google Home
  • Detection Type: Magnetic
  • Function: Open/Close Detection, Security Alarm
Smart Smoke and Fire Detector — Smoke Detectors, Stone Home

Fire Safety Equipment

(1)

Smart Smoke and Fire Detector WiFi connectivity

$64.71
  • Specifications
  • Brand: Stone Home
  • Connectivity: WiFi
  • Alert Type: Voice, LED
  • Compatibility: Smart home systems
  • Installation: Easy
Smart Waste Bin Sensor — Waste Baskets, Simple and warm

Water Leak Detection Systems

(no rating)

Smart Waste Bin Sensor Waterproof design

$63.96
  • Specifications
  • Brand: Simple and warm
  • Waterproof: Yes
  • Battery operated: Yes
  • Dual barrel: Yes
Smart CO2 Detector — Air Quality Monitors, TOMTOP JMS

Fire Safety Equipment

(1)

Smart CO2 Detector Wi-Fi connectivity

$57.32
  • Specifications
  • Brand: TOMTOP JMS
  • Connectivity: Wi-Fi
  • Display: LCD
  • Measurements: CO2 levels, temperature, humidity
Handheld Carbon Monoxide Meter — Gas Analyzers, Kkmoon

Gas Safety Equipment

(2)

Kkmoon ST9700 High precision CO measurement

$52.15
  • Specifications
  • Brand: Kkmoon
  • Model: ST9700
  • Measurement Range: 0-1000ppm
  • Accuracy: ±5%
  • Response Time: <60 seconds
  • Power Supply: Battery operated
WiFi Vibration Sensor — Smart Home Security, AE Selection

Fire Safety Equipment

(1)

WiFi Vibration Sensor Beige Real-time monitoring

$48.42
  • Specifications
  • Brand: AE Selection
  • Compatibility: Tuya smart home systems
  • Connectivity: WiFi
  • Color: Beige
  • Monitoring: Real-time
  • Notifications: Smartphone alerts
Touch Handle Alarm — Smart Home Security, Zen-Japan Electronics

Fire Safety Equipment

(no rating)

Touch Handle Alarm 115 dB loud alarm

$46.62
  • Specifications
  • Brand: Zen-Japan Electronics
  • Alarm Sound Level: 115 dB
  • Sensor Type: Vibration sensor
  • Activation Method: Touch sensitive handle
  • Installation: Easy
Smart WiFi LCD Gas Leak Detector — Gas Safety Equipment, baihe

Gas Safety Equipment

(1)

Smart WiFi LCD Gas Leak Detector WiFi connectivity

$45.21
  • Specifications
  • Brand: baihe
  • Connectivity: WiFi
  • Power Source: USB
  • Alarm Type: Sound, Light
  • Detection Gases: Propane, Methane-Butane
Smart WiFi LCD Gas Leak Detector — Gas Safety Equipment, Xingben Two

Gas Safety Equipment

(2)

Smart WiFi LCD Gas Leak Detector WiFi connectivity

$45.21
  • Specifications
  • Brand: Xingben Two
  • Power Source: USB
  • Detection Gases: Propane, Methane-Butane
  • Alarm Type: Sound, Light
  • Connectivity: WiFi
  • Display: LCD
Handheld Gas Leak Detector — Gas Safety Equipment, Zeblaze

Gas Safety Equipment

(2)

Handheld Gas Leak Detector Red Portable design

$43.96
  • Specifications
  • Brand: Zeblaze
  • Detectable Gases: Combustible gases, Natural gas
  • Color: Red, Black
  • Portability: Handheld
Smart WiFi LCD Gas Leak Detector — Gas Safety Equipment, Ximalaya

Gas Safety Equipment

(2)

Smart WiFi LCD Gas Leak Detector WiFi connectivity

$43.90
  • Specifications
  • Brand: Ximalaya
  • Power Source: USB
  • Detection Gases: Propane, Methane-Butane
  • Alarm Type: Sound, Light
  • Connectivity: WiFi
  • Display: LCD digital
Smart Door Sensor — Smart Home Security, Build My Home

Fire Safety Equipment

(no rating)

Build My Home Tuya Smart Zigbee WiFi Zigbee WiFi connectivity

$38.94
  • Specifications
  • Brand: Build My Home
  • Model: Tuya Smart Zigbee WiFi
  • Connectivity: Zigbee, WiFi
  • Compatibility: Alexa, Google Home, Alice
  • Detection Type: Door, Window
  • Control: App
WiFi Zigbee Door Window Magnetic Sensor — Smart Home Security, Build My Home

Fire Safety Equipment

(no rating)

WiFi Zigbee Door Window Magnetic Sensor Smart home automation

$38.48
  • Specifications
  • Brand: Build My Home
  • Connectivity: WiFi, Zigbee
  • Compatibility: Alexa, Google Home
  • Detection Type: Magnetic
  • Functionality: Security alarm, Home automation
Solar term door position sensor — Smart Home Security, Tesla Car parts

Fire Safety Equipment

(2)

Tesla Car parts A22-668 R00 Solar powered

$37.13
  • Specifications
  • Brand: Tesla Car parts
  • Model: A22-668 R00
  • Power source: Solar
  • Installation: DIY
  • Energy efficiency: High
Smart Human Presence Detector — Smart Home Security, White Dream

Fire Safety Equipment

(2)

White Dream Tuya Zigbee ZigBee and Wi-Fi connectivity

$37.02
  • Specifications
  • Brand: White Dream
  • Model: Tuya Zigbee
  • Connectivity: ZigBee, Wi-Fi
  • Technology: Millimeter wave
  • Compatibility: Tuya Zigbee
Smart WiFi LCD Gas Leak Detector — Gas Safety Equipment, Be a good person

Gas Safety Equipment

(no rating)

Smart WiFi LCD Gas Leak Detector WiFi connectivity

$37.02
  • Specifications
  • Brand: Be a good person
  • Connectivity: WiFi
  • Power Source: USB
  • Detection Gases: Propane, Methane-butane
  • Alarm Type: Sound, Light
  • Display: LCD digital
Vibration Sensor — Smart Home Security, Y-KOOK

Fire Safety Equipment

(1)

Vibration Sensor Smart home integration

$36.88
  • Specifications
  • Brand: Y-KOOK
  • Compatibility: Tuya smart home ecosystem
  • Connectivity: Wireless
  • Installation: Easy, no wiring required
Wi-Fi Door Sensor — Smart Home Security, Refreshing Home

Fire Safety Equipment

(1)

Refreshing Home 19JWT White Works with Alexa

$32.51
  • Specifications
  • Brand: Refreshing Home
  • Model: 19JWT
  • Compatibility: Alexa, Google Home, Smart Life
  • Color: White
  • Connectivity: Wi-Fi
  • Sensor Type: Magnetic
Smoke Detector — Smoke & CO Detectors, Xiaomi

Fire Safety Equipment

(2)

Smoke Detector Sound and visual alarm

$31.74
  • Specifications
  • Brand: Xiaomi
  • Alarm Type: Sound, Visual
  • Connectivity: Bluetooth
  • Compatibility: Smart home systems
Magnetic Door and Window Sensor — Smart Home Security, YOCOLO

Fire Safety Equipment

(1)

Magnetic Door and Window Sensor Tuya Smart Home System compatible

$29.79
  • Specifications
  • Brand: YOCOLO
  • Compatibility: Tuya Smart Home System
  • Type: Magnetic sensor
  • Function: Door and window status detection, Scene automation
Liquid Level Sensor — Liquid Level, Crafttradeonline

Water Leak Detection Systems

(no rating)

Liquid Level Sensor Simple installation

$29.68
  • Specifications
  • Brand: Crafttradeonline
  • Installation: Simple
  • Design: Portable
  • Use: Practical
Smart WiFi Robot Wireless Valve Controller with Leak Detection Sensors — Smart Home Security, Global Finds

Water Leak Detection Systems

(no rating)

Global Finds Tuya Smart WiFi Robot WiFi connectivity

$28.86
  • Specifications
  • Brand: Global Finds
  • Model: Tuya Smart WiFi Robot
  • Connectivity: WiFi
  • Sensors: Leak detection
  • Control: Wireless
  • Installation: Easy
Wi-Fi Siren Alarm Sensor — Smart Home Security, Neo

Fire Safety Equipment

(2)

Neo Wi-Fi Siren White Wi-Fi connectivity

$27.81
  • Specifications
  • Brand: Neo
  • Model: Wi-Fi Siren
  • Connectivity: Wi-Fi
  • Compatibility: Tuya Smart Life app
  • Color: White
  • Installation: Easy
Smoke and Carbon Monoxide Detector — Smoke & CO Detectors, Toys Arts

Dual Sensor Alarms

(2)

Smoke and Carbon Monoxide Detector Dual high-stability sensors

$27.68
  • Specifications
  • Brand: Toys Arts
  • Sensors: Smoke, Carbon Monoxide
  • Alarm Type: Audible, Visual
  • Design: Compact, Lightweight
Door Open/Close Sensor — Smart Home Security, Build My Home

Fire Safety Equipment

(1)

Door Open/Close Sensor White ZigBee connectivity

$27.64
  • Specifications
  • Brand: Build My Home
  • Connectivity: ZigBee
  • Compatibility: Tuya app
  • Detection Type: Magnetic switch
  • Color: White
Smart Door Sensor — Smart Home Security, Good Household Items

Fire Safety Equipment

(no rating)

Smart Door Sensor WiFi connectivity

$27.30
  • Specifications
  • Brand: Good Household Items
  • Connectivity: WiFi
  • Compatibility: Alexa, Google Home
  • Detection: Open/close
Door and Window Sensor — Smart Home Security, Aqara

Fire Safety Equipment

(no rating)

Door and Window Sensor White Wireless ZigBee connection

$24.60
  • Specifications
  • Brand: Aqara
  • Connection: ZigBee
  • Compatibility: Smart home systems
  • Installation: Adhesive backing
  • Color: White
Smoke and Carbon Monoxide Detector — Smoke & CO Detectors, Neoglint

Dual Sensor Alarms

(2)

Smoke and Carbon Monoxide Detector Dual high-stability sensors

$24.60
  • Specifications
  • Brand: Neoglint
  • Sensors: Smoke, Carbon Monoxide
  • Alerts: Audible, Visual
  • Installation: Wall-mounted, Ceiling-mounted
  • Power Source: Battery-operated
Smart Water Leak Sensor — Water Leak Detection Systems, Build My Home

Water Leak Detection Systems

(no rating)

Smart Water Leak Sensor WiFi connectivity

$23.89
  • Specifications
  • Brand: Build My Home
  • Connectivity: WiFi
  • Compatibility: Tuya Smart Life app
  • Features: Water leak detection, Intrusion sensor, Overflow alarm
Flood Sensor — Water Leak Detection Systems, Tuya Smart

Water Leak Detection Systems

(2)

Tuya Smart Water Leak Detector Wi-Fi connectivity

$23.22
  • Specifications
  • Brand: Tuya Smart
  • Model: Water Leak Detector
  • Connectivity: Wi-Fi
  • Compatibility: Tuya Smart, Smart Life
  • Detection Type: Water leak, Flood
Recessed Magnetic Switch AC220V Iron NC Wired Door Sensor Window Reed Switch for Alarm — Smart Home Security, Neoglint

Fire Safety Equipment

(no rating)

Recessed Magnetic Switch AC220V Iron NC Wired Door Sensor Window Reed Switch for Alarm

$22.07
  • Specifications
  • Brand: Neoglint
  • Voltage: AC220V
  • Material: Iron
  • Type: NC (Normally Closed)
  • Installation: Recessed
  • Quantity: 2 sets
Smart Wi-Fi Water Leak Detector — Water Leak Detection Systems, Neoglint

Water Leak Detection Systems

(no rating)

Smart Wi-Fi Water Leak Detector Wi-Fi connectivity

$21.78
  • Specifications
  • Brand: Neoglint
  • Connectivity: Wi-Fi
  • Operation: Wireless
  • Alert Type: Mobile notifications
  • Detection Capability: Water leaks, Flood level
Smart Smoke Detector — Smoke Detectors, TOMTOP JMS

Fire Safety Equipment

(2)

Smart Smoke Detector White Wi-Fi connectivity

$21.60
  • Specifications
  • Brand: TOMTOP JMS
  • Connectivity: Wi-Fi
  • Detection Angle: 360 degrees
  • Compatibility: Tuya app
  • Color: White
Smart Water Leak Sensor — Water Leak Detection Systems, Neoglint

Water Leak Detection Systems

(no rating)

Smart Water Leak Sensor WiFi connectivity

$21.03
  • Specifications
  • Brand: Neoglint
  • Connectivity: WiFi
  • Compatibility: Tuya
  • Installation: Easy
  • Recommended Locations: Basements, Laundries
Water Leak Alarm Detector — Water Leak Detection Systems, Build My Home

Water Leak Detection Systems

(1)

Water Leak Alarm Detector 110dB loud alarm

$20.61
  • Specifications
  • Brand: Build My Home
  • Alarm Sound Level: 110dB
  • Detection Type: Water leak, Flood, Overflow
  • Installation: Independent, No hub required
Smart Water Leak Detector — Water Leak Detection Systems, Refreshing Home

Water Leak Detection Systems

(2)

Smart Water Leak Detector Wi-Fi connectivity

$20.47
  • Specifications
  • Brand: Refreshing Home
  • Connectivity: Wi-Fi
  • Compatibility: Tuya Smart Life app
  • Alert Type: Smartphone notifications
Wireless Home Security Door Sensor — Smart Home Security, Minco Home

Fire Safety Equipment

(1)

Wireless Home Security Door Sensor Wi-Fi connectivity

$19.37
  • Specifications
  • Brand: Minco Home
  • Connectivity: Wi-Fi
  • Detection Type: Magnetic
  • Compatibility: Home automation systems
  • Installation: DIY
Smart Water Sensor — Water Leak Detection Systems, Minco Home

Water Leak Detection Systems

(2)

Smart Water Sensor Wi-Fi connectivity

$19.12
  • Specifications
  • Brand: Minco Home
  • Connectivity: Wi-Fi
  • Compatibility: Tuya Smart Life app
  • Alert Type: Smartphone notification, Security alarm
Water Leak Detector — Water Leak Detection Systems, 3d printing machine

Water Leak Detection Systems

(2)

Water Leak Detector White WIFI connectivity

$18.61
  • Specifications
  • Brand: 3d printing machine
  • Connectivity: WIFI
  • Compatibility: Tuya Smart
  • Power Source: Battery (not included)
  • Color: White
Water Leak Detector Sensor — Water Leak Detection Systems, Darling Women Boutique C

Water Leak Detection Systems

(no rating)

Water Leak Detector Sensor Precise water detection

$18.07
  • Specifications
  • Brand: Darling Women Boutique C
  • Detection Type: Water
  • Alarm Type: Audible
  • Installation: Easy, No tools required
Wi-Fi Door Alarm, Window Sensor — Smart Home Security, TOMTOP JMS

Fire Safety Equipment

(2)

Wi-Fi Door Alarm, Window Sensor White Smart home compatible

$17.98
  • Specifications
  • Brand: TOMTOP JMS
  • Compatibility: Tuya SmartLife app
  • Color: White
  • Installation: Easy
  • Detection Type: Door, Window
Smart Water Leak Alarm — Smoke Detectors, TOP MALL-004

Water Leak Detection Systems

(1)

TOP MALL-004 Tuya Wi-Fi connectivity

$17.30
  • Specifications
  • Brand: TOP MALL-004
  • Model: Tuya
  • Connectivity: Wi-Fi
  • Standby Mode: Ultra-long
  • Usage: Household
Immersion Sensor — Water Leak Detection Systems, Xiaomi

Water Leak Detection Systems

(2)

Xiaomi Water White Wireless water leak detection

$16.61
  • Specifications
  • Brand: Xiaomi
  • Model: Water
  • Waterproof Rating: IP67
  • Compatibility: Mi Home app
  • Connectivity: Wireless
  • Color: White
Smart Door Sensor — Smart Home Security, TOMTOP JMS

Fire Safety Equipment

(2)

Smart Door Sensor White Zigbee connectivity

$16.39
  • Specifications
  • Brand: TOMTOP JMS
  • Connectivity: Zigbee
  • Compatibility: Tuya app
  • Detection Type: Magnetic switch
  • Color: White
  • Installation: Adhesive backing
Smart Water Leak Alarm — Smoke Detectors, Refreshing Home

Water Leak Detection Systems

(1)

Refreshing Home Tuya Wi-Fi connectivity

$14.15
  • Specifications
  • Brand: Refreshing Home
  • Model: Tuya
  • Connectivity: Wi-Fi
  • Standby Mode: Ultra-long
  • Detection Type: Water level
  • Usage: Household
Water Leak Detector Alarm — Water Leak Detection Systems, jiatongdiji

Water Leak Detection Systems

(no rating)

Water Leak Detector Alarm Sound alarm for water leaks

$12.22
  • Specifications
  • Brand: jiatongdiji
  • Alarm Type: Sound
  • Detection Type: Water Leak, Overflow
  • Installation: Tool-free
Smart Door Sensor — Smart Home Security, Turefans

Fire Safety Equipment

(2)

Smart Door Sensor Wi-Fi connectivity

$12.16
  • Specifications
  • Brand: Turefans
  • Connectivity: Wi-Fi
  • Compatibility: Google Home, Alexa, Smart Life app
  • Detection Type: Open/close
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