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Surveillance EquipmentAll CamerasAll Home AssistantsAll PhonesAll Security CamerasApple HomeKit Compatible DevicesCamera AccessoriesCell Phone AccessoriesComputer AccessoriesComputer MonitorsDesktop ComputersGeneral Electronic AccessoriesGoogleGoogle HomeGrades 6-12 ElectronicsHeadphonesiPad & TabletsLaptop AccessoriesLaptopsNetworkingPC GamingPortable AudioRestored AutomotiveRestored HomeRestored PremiumRestored TechRestored ToolsSecurity CamerasSecurity Cameras and Security Camera SystemsShop all Headphones & SpeakersShop by BenefitShop by BrandShop by CompatibilityShop by RoomShop Cameras by TypeSmart Energy and LightingSmart Home Assistants, Controllers & HubsSmart SpeakersSurveillance CamerasTablet AccessoriesTV AccessoriesWorks with AlexaWorks with Google Assistant
Room Sensor(395)
Uses item details. Price when purchased online
Room Alert 12S Proactive Environment Monitor – Built-in Temperature Sensor, Supports SSL/TLS, SNMP v3, App Alerts, Made in USA $779.00

Sponsored
$77900
current price $779.00Room Alert 12S Proactive Environment Monitor – Built-in Temperature Sensor, Supports SSL/TLS, SNMP v3, App Alerts, Made in USA
TOPGREENER Motion Sensor Switch with Ambient Light Level, Occupancy & Vacancy Modes, No Neutral Required, Ground Wire Required, 150W LED/CFL, Single Pole, TDOS5-JM-W-2PCS, White, 2 Pack From $19.99

Sponsored
From$1999
TOPGREENER Motion Sensor Switch with Ambient Light Level, Occupancy & Vacancy Modes, No Neutral Required, Ground Wire Required, 150W LED/CFL, Single Pole, TDOS5-JM-W-2PCS, White, 2 Pack
43 out of 5 Stars. 4 reviews
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YoLink LoRa Smart Door Sensor Starter Kit: - 1/4 Mile Open-Air Range, Door Left-Open Reminders,5 Years Battery Life, SMS/Text, Email & App Alerts, Alexa, IFTTT, Home Assistant From $16.95

Sponsored
From$1695
YoLink LoRa Smart Door Sensor Starter Kit: - 1/4 Mile Open-Air Range, Door Left-Open Reminders,5 Years Battery Life, SMS/Text, Email & App Alerts, Alexa, IFTTT, Home Assistant
304.6 out of 5 Stars. 30 reviews
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Akicon Humidity Sensor Switch for Bathroom Exhaust Fan, Ventilation fan, LED Light, Night Light, Air Moisture Control, Timer Switch for Bathroom Fan, UL Listed, White $43.99
Sponsored
$4399
current price $43.99Akicon Humidity Sensor Switch for Bathroom Exhaust Fan, Ventilation fan, LED Light, Night Light, Air Moisture Control, Timer Switch for Bathroom Fan, UL Listed, White
15 out of 5 Stars. 1 reviews
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Emerson Sensi RS01-SG Room Sensor for Sensi Touch 2 - White $39.99

$3999
current price $39.99Emerson Sensi RS01-SG Room Sensor for Sensi Touch 2 - White
25 out of 5 Stars. 2 reviews
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Honeywell Home Smart Room Sensor Designed for the T9 Series Thermostat $39.99

$3999
current price $39.99Honeywell Home Smart Room Sensor Designed for the T9 Series Thermostat
244 out of 5 Stars. 24 reviews
Honeywell Home RedLINK 3.0 indoor sensors for T10+ (2-Pack) $95.30

$9530
current price $95.30Honeywell Home RedLINK 3.0 indoor sensors for T10+ (2-Pack)
25 out of 5 Stars. 2 reviews
C by GE Wire-Free Motion Smart Sensor, Battery Powered Motion Sensor, Bluetooth, Ambient Light Detection, White, 1-Pack Was $39.99

C by GE Wire-Free Motion Smart Sensor, Battery Powered Motion Sensor, Bluetooth, Ambient Light Detection, White, 1-Pack
464.3 out of 5 Stars. 46 reviews
WIFI Wireless Smart Magnetic Door Window Sensor Detector Alarm For Google Home $11.95

$1195
current price $11.95WIFI Wireless Smart Magnetic Door Window Sensor Detector Alarm For Google Home
33.7 out of 5 Stars. 3 reviews
Clearance Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black From $13.98

From$1398
Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black
904.2 out of 5 Stars. 90 reviews
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Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use $25.79 Was $39.39

Sponsored
Now$2579
current price Now $25.79, Was $39.39$39.39
Driveway Alarm 656ft Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor-DIY Security Alert-Monitor with 38 Chimes for Indoor Outdoor Use
873.8 out of 5 Stars. 87 reviews
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Best seller Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black $27.99

Sponsored
$2799
current price $27.99Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black
794.2 out of 5 Stars. 79 reviews
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Vivint dw12 window and door sensor $29.99

$2999
current price $29.99Vivint dw12 window and door sensor
25 out of 5 Stars. 2 reviews
2Pairs Smart Door Sensor, WiFi Window Door Sensor Alarm, Contact Sensor for Home Security, Smart Home Automation $15.48

$1548
current price $15.482Pairs Smart Door Sensor, WiFi Window Door Sensor Alarm, Contact Sensor for Home Security, Smart Home Automation
15 out of 5 Stars. 1 reviews
Multifunctional High Accuracy USB Powered Wireless Baby Room Temperature Humidity Sensor Garage Bedroom APP Control Smart $46.67

$4667
current price $46.67Multifunctional High Accuracy USB Powered Wireless Baby Room Temperature Humidity Sensor Garage Bedroom APP Control Smart
NuTone BIAQRS100 Overture Smart Air Quality Monitor Room Sensor

NuTone BIAQRS100 Overture Smart Air Quality Monitor Room Sensor
Clearance Door Window Alarm, 95DB Door Alarms for Kids Safety, Wireless Sensor Door Window Burglar Alarm-Window Pool Alarms for Home (3 Pack) Was $7.94

Door Window Alarm, 95DB Door Alarms for Kids Safety, Wireless Sensor Door Window Burglar Alarm-Window Pool Alarms for Home (3 Pack)
414 out of 5 Stars. 41 reviews
Honeywell C7189R1004 RedLINK Wireless Indoor Sensor,Temp and Humidity-2PK by Honeywell $59.99 Was $160.77

Now$5999
current price Now $59.99, Was $160.77$160.77
Honeywell C7189R1004 RedLINK Wireless Indoor Sensor,Temp and Humidity-2PK by Honeywell
Google Nest Temperature Sensor Was $39.00

Google Nest Temperature Sensor
12624.8 out of 5 Stars. 1262 reviews
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Best seller Bitiwend Door Alarm Sensor Bitiwend Wireless Door Chime Alert for Kids Safety Home (1 Receiver+3 Sensors)

Bitiwend Door Alarm Sensor Bitiwend Wireless Door Chime Alert for Kids Safety Home (1 Receiver+3 Sensors)
1054.1 out of 5 Stars. 105 reviews
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SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System $42.35

Sponsored
$4235
current price $42.35SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System
KFFKFF Wireless Door Chime, DC 12V, Contact Sensor Alarm with 656 ft Range, App-Controlled Remote, Door Alert System for Business, Store, Home, Office (6 Sensors + 1 Receiver) $50.99 $50.99/ca

Sponsored
$5099
current price $50.99$50.99/ca
KFFKFF Wireless Door Chime, DC 12V, Contact Sensor Alarm with 656 ft Range, App-Controlled Remote, Door Alert System for Business, Store, Home, Office (6 Sensors + 1 Receiver)
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Smart WiFi Door Sensor - 2.76x0.98in Wireless Window Alarm with Real-Time Alerts, Works with Smart Life App for Home Security, Garage Shop Monitoring

Smart WiFi Door Sensor - 2.76x0.98in Wireless Window Alarm with Real-Time Alerts, Works with Smart Life App for Home Security, Garage Shop Monitoring
Room Alert Digital Active Power w/Temperature Sensor $119.00

$11900
current price $119.00Room Alert Digital Active Power w/Temperature Sensor
Best seller Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (4 Pcs) Home Alarm(Batteries not included) From $10.49

3 options
Available in additional 3 optionsFrom$1049
Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (4 Pcs) Home Alarm(Batteries not included)
1423.9 out of 5 Stars. 142 reviews
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HIBIBUD 110V Automatic Body Sensor IR Infrared Sensors Switch Motion Detector Wall Mount Outdoor Light $11.46

$1146
current price $11.46HIBIBUD 110V Automatic Body Sensor IR Infrared Sensors Switch Motion Detector Wall Mount Outdoor Light
DSC WS4945 Wireless Door/Window Contact Sensor $57.05

$5705
current price $57.05DSC WS4945 Wireless Door/Window Contact Sensor
25 out of 5 Stars. 2 reviews
Philips Wiz Motion Sensor, White $23.69

$2369
current price $23.69Philips Wiz Motion Sensor, White
464.6 out of 5 Stars. 46 reviews
axGear Smart WiFi Door Sensor Window Contacts Open and Close Detector $10.99

$1099
current price $10.99axGear Smart WiFi Door Sensor Window Contacts Open and Close Detector
23 out of 5 Stars. 2 reviews
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Honeywell Home 5816WMWH Wireless Door/ Window Sensor Was $35.49

Honeywell Home 5816WMWH Wireless Door/ Window Sensor
25 out of 5 Stars. 2 reviews
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VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver) $55.98

Sponsored
$5598
current price $55.98VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver)
23 out of 5 Stars. 2 reviews
SecurityMan Door Handle Alarm with 130dB Vibration Triggered Portable Door Alarm - Perfect Alarm for Doors When Opening for Kids, Toddler, Elderly, Hotel, Travel, Bedroom (2 Pack Door Security Alarm) $29.99

Sponsored
$2999
current price $29.99SecurityMan Door Handle Alarm with 130dB Vibration Triggered Portable Door Alarm - Perfect Alarm for Doors When Opening for Kids, Toddler, Elderly, Hotel, Travel, Bedroom (2 Pack Door Security Alarm)
23 out of 5 Stars. 2 reviews
Maxxima Ceiling Mount 360 Degree PIR Occupancy Sensor - Hard-Wired Motion Sensor, 120V LED Compatible, Automatic Sensing Solution for Indoor Use at Max Height 10ft, Ideal for Closets and Pantries $14.99

$1499
current price $14.99Maxxima Ceiling Mount 360 Degree PIR Occupancy Sensor - Hard-Wired Motion Sensor, 120V LED Compatible, Automatic Sensing Solution for Indoor Use at Max Height 10ft, Ideal for Closets and Pantries
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Ecobee EB-RSHM2PK-01 Decibel Rating 1 Maximum Range 1 Range White Household Sensors and Alarms Smart Sensor 2 Pieces 2 Pack $87.99 Was $99.00

Now$8799
current price Now $87.99, Was $99.00$99.00
Ecobee EB-RSHM2PK-01 Decibel Rating 1 Maximum Range 1 Range White Household Sensors and Alarms Smart Sensor 2 Pieces 2 Pack
2024.3 out of 5 Stars. 202 reviews
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2X Tuya WiFi Temperature and Humidity Sensor Indoor Humidity Sensor APP Monitoring for Home Assistant $14.10

$1410
current price $14.102X Tuya WiFi Temperature and Humidity Sensor Indoor Humidity Sensor APP Monitoring for Home Assistant
Philips Hue Smart Motion Sensor, Hub Required $52.99

$5299
current price $52.99Philips Hue Smart Motion Sensor, Hub Required
44 out of 5 Stars. 4 reviews
Indoor Plug-In Motion Activated Control $32.03

$3203
current price $32.03Indoor Plug-In Motion Activated Control
15 out of 5 Stars. 1 reviews
Siemens QAA22SS.EWSN Room Temp Sensor, White $137.20

$13720
current price $137.20Siemens QAA22SS.EWSN Room Temp Sensor, White
TELLUR Smart WiFi Door/Window Sensor for Security, Smartphone App, Push Notification, No Hub Required $22.99

$2299
current price $22.99TELLUR Smart WiFi Door/Window Sensor for Security, Smartphone App, Push Notification, No Hub Required
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1 Packs Smart Door Lock Sensor Night Light with Motion Detection Human Body Infrared Sensor for Home Security Auto On/Off LED Light for Porch Cabinet Garage Battery Powered Easy Installation From $9.95

4 options
Available in additional 4 optionsFrom$995
1 Packs Smart Door Lock Sensor Night Light with Motion Detection Human Body Infrared Sensor for Home Security Auto On/Off LED Light for Porch Cabinet Garage Battery Powered Easy Installation
Honeywell FBA C7189R1004 Wireless Indoor Sensor, Premier White $59.99

$5999
current price $59.99Honeywell FBA C7189R1004 Wireless Indoor Sensor, Premier White
WiFi Smart Motion Sensor Alarm Indoor Infrared PIR Detector Siren Tuya Smart APP Control Wireless Trigger Player Home Security

WiFi Smart Motion Sensor Alarm Indoor Infrared PIR Detector Siren Tuya Smart APP Control Wireless Trigger Player Home Security
24.5 out of 5 Stars. 2 reviews
ecobee 2-Pack SmartSensor for Doors and Windows, White $88.99

$8899
current price $88.99ecobee 2-Pack SmartSensor for Doors and Windows, White
6714 out of 5 Stars. 671 reviews
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4-Pack Zigbee Smart Temperature & Humidity Sensor for Indoor Monitoring - Wireless Room Sensor with App Alerts & Voice Control Compatibility $34.24

$3424
current price $34.244-Pack Zigbee Smart Temperature & Humidity Sensor for Indoor Monitoring - Wireless Room Sensor with App Alerts & Voice Control Compatibility
3-Pack 7” Indoor Motion Sensor LED Lights - Battery Operated, Stick on Cool White

3-Pack 7” Indoor Motion Sensor LED Lights - Battery Operated, Stick on Cool White
Upgraded Smart WiFi Motion Sensor Detector Alarm Indoor with Siren, Phone App, USB Power, Alert Recording, Scheduled Working Times - Infrared Motion Sensor Alarm for Home Garage $22.88

$2288
current price $22.88Upgraded Smart WiFi Motion Sensor Detector Alarm Indoor with Siren, Phone App, USB Power, Alert Recording, Scheduled Working Times - Infrared Motion Sensor Alarm for Home Garage
Automatic Sensor Light, Motion Sensor Light, White Light Sensor Detector Indoor Night Light Auto PIR Sensitive Motion For Baby Room $11.23

$1123
current price $11.23Automatic Sensor Light, Motion Sensor Light, White Light Sensor Detector Indoor Night Light Auto PIR Sensitive Motion For Baby Room
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3 Pack WD61 Water Leak Detector for , Support Pair with W13 WiFi Gateway (Sold Separately) for App Alert, Water Flood/Drip Sensor for Basement/Kitchen/Bathroom/Laundry Room,Sink/Pipe From $38.00
From$3800
3 Pack WD61 Water Leak Detector for , Support Pair with W13 WiFi Gateway (Sold Separately) for App Alert, Water Flood/Drip Sensor for Basement/Kitchen/Bathroom/Laundry Room,Sink/Pipe
Coleman Mach 83305191 Sensor Room $22.99

$2299
current price $22.99Coleman Mach 83305191 Sensor Room
VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver) $55.98

$5598
current price $55.98VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver)
23 out of 5 Stars. 2 reviews
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