System Sensor 4WT-B Smoke Alarm Deal Price Compare

Similar Detectors and Sensors picks priced within $6 of $10.00 ($4.00 – $16.00). 129 products found.

Found 106 products with a lower price than this one.

Best Amazon Beauty Detectors and Sensors Deals and Reviews, System Sensor 4WT-B Smoke Alarm Deal – Budget-Friendly Detection

← Back to product

Qualirey Solar Sound and Light Alarm Motion Sensor 129db Outdoor Security Siren Waterproof Activated Detector Driveway Alarm 6 LEDs Flash Warning Deterrent Strobe System for Home, Farm(Red,6 Pack)

$10.00 Buy on Amazon

Geevon 10 Pack Water Leak Detectors for Home, 100dB Water Sensor Alarm Flood Leakage Detection Devices for Bathroom, Basements, Laundry Rooms, Kitchen, IP56 Waterproof(Battery＆Screwdriver Included)

$9.00 Buy on Amazon

First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector with Test & Silence Button, SM310, 1-Pack

$9.00 Buy on Amazon

SITERWELL Smoke Detector, Smoke Detector 10 Year Battery with Photoelectric Sensor, Fire Alarm with Low Battery and Fault Warning for House and Bedroom, UL217 Listed, GS525A,6 Packs

$13.00 Buy on Amazon

eufy Water Leak and Freeze Sensor E20, Dual Detection, Extended Reach with Cable, Built-in Alert with 75 dB Alarm, Long-Lasting 5-Year Battery Life, Requires HomeBase 2, 3, Mini, or Pro

$6.00 Buy on Amazon

ChunHee Outdoor Motion Sensor Alarm, Barking Dog Alarm with 360° Detection, Supports Voice Recording, Adjustable Volume, 120dB Motion Activated Alarm for Home, Garden, Yard, Farm – 1 Pack

$6.00 Buy on Amazon

X-Sense 2-in-1 Smoke and Carbon Monoxide Detector Alarm (Not Hardwired), 10-Year Battery-Operated Dual Sensor Fire & CO Alarm, UL 217 & UL 2034 Certified, SC06, 1-Pack

$6.00 Buy on Amazon

Kidde Smoke Detector, 10-Year Battery, Photoelectric Sensor Smoke Alarm, White

$6.00 Buy on Amazon

5 Pack Water Leak Detectors for Home, 100dB Water Sensor Alarm for Basement,Flood Leakage Detection Devices for Pipe/Drain/Sink/Faucet Drip Alert,Floor Flooding in Bathroom/Kitchen/Toilet/Laundry Room

$6.00 Buy on Amazon

Solar Wireless Driveway Alarm - 1/2 Mile Long Range IP65 Weatherproof, Microwave & Infrared Dual Detection to Reduce False Alarms, DIY Home Security Alert System for Indoor/Outdoor Property (1R1S)

$5.00 Buy on Amazon

AGSHOME Security Alarm System 99+7 Zone Auto Dial 3/4G GSM SMS Home Burglar Security Wireless GSM Alarm System Detector Sensor Kit Remote Control

$15.00 Buy on Amazon

Driveway Alarm Wireless Outside, 1 BY ONE Motion Sensor Alarm 1000ft/300m Range Extra Loud Chimes Security Alarm System with 1 Receiver 2 Weatherproof Infrared Sensors Protect Indoor/Outdoor Property

$4.00 Buy on Amazon

Wireless Driveway Alarm Door Chimes, Business Smart Infrared Visitor Doorbell Chime, Indoor Home Security System with 1 Plug-in Receiver and 2 PIR Motion Sensor Detectors Weatherproof(White)

$4.00 Buy on Amazon

Smart Caregiver Wireless Motion Sensor Alarm System with Pager for Fall and Wandering Prevention | Mountable Motion Detector Alarm Alerts Medical Caregiver with Up to 300' Range | Bed or Door Movement

$4.00 Buy on Amazon

Photoelectric Smoke Detector with 9V Battery Included Smoke Alarm, 10-Year Sensor, Test/Silence Button, Low Battery Warning, Easy Mount, 1 Pack Fire Alarm for Home Bedroom Living Room

$4.00 Buy on Amazon

RAB Lighting GT500 Motion Sensor Light Outdoor – Hardwired Motion Sensor Flood Light, 120V/277V 600W/1350W Switching, 110° Detection, Wet Rated Outdoor Security Light - White

$10.00 Buy on Amazon

SensorSwitch Ceiling Motion Sensor, Passive Infrared PIR Occupancy Sensor, 360° Small Motion Detection, Indoor Use, Low Voltage, Standard Range

$11.00 Buy on Amazon

WiFi Water Leak Detector for Home with App Notification, 1 2.4Ghz Gateway + 6 WD61 Sensor, 120dB Water Flood/Drip Alarm for Basement/Kitchen/Bathroom/Toilet/Laundry Room,Sink/Pipe/Faucet Leakage Alert

$9.00 Buy on Amazon

Smoke Detector,Smoke Alarm for Home Replaceable Battery Powered,85dB Fire Alarm with Test/Mute Button,8 PCS

$11.00 Buy on Amazon

Resideo CHW3610W8001 WiFi Water Leak Detector For Home, Smart Water Sensor Alarm and Freeze Detector, Water Detector Alarm for Basement, Bathroom, and Under Sink

$9.00 Buy on Amazon

4-in-1 Portable Carbon Monoxide Detectors Plug in - Natural Gas Leak Detector, Propane & CO Alarm with Dual Sensor, Temp & Humidity Display for Home, RV, Travel, Apartment, 2Pcs

$9.00 Buy on Amazon

GoveeLife Upgraded Smart Water Leak Detector 1s with 1804 ft Ultra-Long Range, WiFi Water Sensor with SMS/Email/APP Push and Sound Alarm,5-Year Battery Life, 5 Pack, Suit for Home, Basement, Kitchen

$9.00 Buy on Amazon

RAB Lighting SMS500W Motion Sensor Outdoor Light Controller, Security Motion Detector Switch for Flood Lights, Hardwired 180° Motion Detection, Adjustable Sensitivity Timer, White

$12.00 Buy on Amazon

Remote Emergency Strobe Siren Alarm Kit Waterproof Outdoor Loud Panic SOS Warning System for Business Home Shop Hotel School 300ft 1 Red Flashing Siren+ 2 Call Buttons

$8.00 Buy on Amazon

12 Pack Water Leak Detectors for Home, 100dB Waterproof Water Sensor Alarm Leak Detector for Basements, Bathrooms, Laundries, Sinks, and Windows(Battery Included)

$8.00 Buy on Amazon

SwitchBot WiFi Water Leak Detector, Smart Water Sensor with 100dB Adjustable Alarm&App Alerts, IP67 Waterproof, Detector for Home with 3.28ft Sensing Cable, No Hub Required (Support 2.4G) (3, White)

$7.00 Buy on Amazon

LUCKYDUO High/Low Sump Pump Alarm WiFi [New Upgrade], Built-in Backup Battery, Smart App Notification Alert, Water Lever Sensor Detector,10ft Tethered Float Switch,110dB Siren for Basement,Septic Tank

$13.00 Buy on Amazon

Govee WiFi Water Leak Detector 3 Packs, Leak Alert with Remotely Email/APP Push and Sound Alarm, Smart Water Sensor with 100dB Adjustable Alarm, Suit for Home and Basement

$7.00 Buy on Amazon

GoveeLife Premium Smart Water Leak Detector 2 with 1968ft Ultra-Long Range, WiFi Water Sensor with SMS/Email/APP Push and Sound Alarm, 5-Year Battery Life, Suitable for Home, Basement, Kitchen, 6 Pack

$13.00 Buy on Amazon

Qualirey 2 Pack Solar Outdoor Motion Sensor Alarm with Stake Animal Deterrent 2 x 129dB Loud Noisemaker 13 Sound Detector Strobe Light, 4 Mode Dog Barking Alarm Sensor on Ground or Fence

$6.00 Buy on Amazon

Aeotec TriSensor 8, 800 Series Zwave Motion Sensor, Temperature, Light Sensor, Work with Zwave Hub Smartthings 3-in 1 Security System, Long Range Capable

$6.00 Buy on Amazon

X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Kitchens, Basements, Bathrooms, 3 Water Detectors & 1 Base Station, Model SWS54

$6.00 Buy on Amazon

5 Pack Black Water Leak Alarm Detector, 120dB Loud Alert Water Sensor, IP66 Waterproof, Sensitive Leak and Drip Alert, Easy Installation for Home, Basement Flood Prevention, Bathroom, Sink, Laundry

$5.00 Buy on Amazon

Motion Sensor Door Chime, Wireless Motion Detector Alarm Indoor, Business Entry Alert Bell with Buzzer, Doorbell for Home/Garage Door/Store, USB/Battery Powered,1 Receiver +2 Sensors

$5.00 Buy on Amazon

HULPPRE Solar Outdoor Motion Sensor Alarm-Dog Barking&Gunshot Sound,130db Loud Noise Maker,Support Recording,13 Kinds of Sound Strobe Light with USB,Say Goodbye to The Intruders

$5.00 Buy on Amazon

8 Pack Water Leak Detectors for Home, 100dB Waterproof Water Sensor Alarm Leak Detector for Basements, Bathrooms, Laundries, Sinks, and Windows(Battery Included)

$5.00 Buy on Amazon

WiFi Water Leak Detectors for Home 3 Pack, Wireless Smart Water Leak Sensor, 120dB Adjustable Water Sensor Alarm Leak Detector, APP Alerts, 3 Water Sensors & 1 Hub for Kitchen, Bathroom, Sink, Laundry

$5.00 Buy on Amazon

5 Pack Water Leak Alarm Detector, 120dB Loud Alert Water Sensor, IP66 Waterproof, Sensitive Leak and Drip Alert, Easy Installation for Home, Basement Flood Prevention, Bathroom, Sink, Laundry

$5.00 Buy on Amazon

Combination-Explosive-Gas-Carbon-Monoxide-Detectors,4-in-1 Upgraded High-Sensitivity Sensor,Real-time Monitoring &Digital Display,Natural Gas Leak,Propane & CO Alarm Plug in for Home,RV,Apartment

$5.00 Buy on Amazon

Relaxweex 4 Pcs Recordable PIR Infrared Motion Sensor Activated Voice Motions Sensor Detector Welcome Doorbell Speaker Motion Sensors Door Chime Alarm Multiple Sounds Player for Play Speech

$4.00 Buy on Amazon

LED Outdoor Motion Sensor Security Floodlight – 1100 Lumens, 180° Detection, Weatherproof Design, Versatile Eave or Wall Mounting, Exit Detection, Rotatable Sensor

$4.00 Buy on Amazon

Door Alarms When Opened – 130 dB Loud Door & Window Alarm, 1.2” Wide Gap Sensor, Instant & Delay Alerts, 3 Volume Levels, AAA Batteries Included, Low Battery Alert, 2 Pack

$4.00 Buy on Amazon

System Sensor 5604 194°F Fixed Temp Single Circuit Heat Sensor

$4.00 Buy on Amazon

CallToU Wireless Motion Sensor Alarm Indoor Motion Detector Alarm, Bed Alarms for Elderly Dementia Patients, Motion Sensor Door Chime with 500 FT Range, 5 Adjustable Volume 1 Sensor + 1 Receiver

$4.00 Buy on Amazon

Solar Outdoor Motion Sensor Alarm, Dog Barking&Gunshot Sound,130db Loud Noise Maker,Support Recording,13 Kinds of Sound and Strobe Light to Deter Raccoons, Deer, Skunks, Bears, and Coyotes

$4.00 Buy on Amazon

System Sensor 5601P single-circuit, 135¦ f fixed-temp/rate-of-rise no

$4.00 Buy on Amazon

SwitchBot Smart mmWave Radar Motion Sensor, Bluetooth Presence Sensor with Dynamic Detection & Zone Positioning, Compatible with Alexa, HomeKit & Apple Home via SwitchBot Hub (Presence Sensor)

$4.00 Buy on Amazon

ChunHee Solar Outdoor Motion Sensor Alarm with Dog Barking Gunshot Sound, Support Recording and Adjustable Volume, 130db Loud Noise Maker 3 Work Modes Strobe Light for Home, Villa, Farm, Barn (1pack)

$4.00 Buy on Amazon

System Sensor 5600 135 Degree Fixed Temperature Rate-of-Rise, Single-Circuit Mechanical Heat Detector with Plain Housing

$4.00 Buy on Amazon

SimpliSafe Motion Sensor - Compatible with Gen 3 Home Security System

$4.00 Buy on Amazon

Zircon Leak Alert Water Leak Detector & Flood Sensor Alarm/Water Leak Sensor with Dual Leak Alarms 90Db Audio/Battery Powered (2 Pack) Batteries Not Included (72311) White

$4.00 Buy on Amazon

DEWENWILS Motion Sensor Outlet, Indoor Outdoor Motion Sensor Plug Outlet, Adjustable Sensing Angle,50FT Detection Range, 100FT Wireless Light Switch Transmitter, No Wiring, Long Time Delay

$4.00 Buy on Amazon

Plug-in Natural and Propane Gas Detector 4-in-1; VITITE Digital Gas Alarm for Home, RV, and Kitchen; 24/7 Gas Monitor Sensor for LPG, LNG, Methane, Butane

$4.00 Buy on Amazon

CPVAN 125dB Loud Motion Sensor Alarm with 328ft Remote Control (40ft PIR Detector, Batteries), Indoor Wireless Infrared Security Motion Detector with Siren for Home Garage Van (CP2 Pro, Black)

$4.00 Buy on Amazon

2026 Upgraded Vehicle Exit Sensor, Automatic Gate Opener Car Detector with 50 ft Cable, Compatible with Mighty Mule,Ghost Controls, LiftMaster Vehicle Door Opening Systems

$10.00 Buy on Amazon

Resistive, Capacitive, Inductive, and Magnetic Sensor Technologies (Series in Sensors)

$10.00 Buy on Amazon

HOUND-1011 Portable Radon Detector for Home, Lightweight, High-Accuracy Sensor, 45-Day Monitoring, Easy-to-Use Radon Tester, Short- & Long-Term in pCi/L or Bq/m³ for Basement – Gray

$10.00 Buy on Amazon

Seco-Larm E-931-S35RRQ NIR Reflective Photoelectric Sensor; For outdoors gates, garage doors, etc; Weatherproof (IP66) construction for indoor/outdoor usage; Adjustable sensing distance- Pack of 1

$9.00 Buy on Amazon

2 Pack, 3-Way Motion Sensor Light Switch (Not Single Pole), Neutral Wire Required, Indoor in-Wall Occupancy Sensor with Wall Plate, Adjustable Timer, Title 24, UL Certified, White

$9.00 Buy on Amazon

MOCREO WiFi Water Leak Detector Kit, 2000ft LoRa Long-Range, SMS App Email Alerts, Leak Severity Tracking, 105dB Adjustable Alarm, 5-Year Battery Life, 3 Smart Water Sensors for Home Basement Kitchen

$9.00 Buy on Amazon

Gas Sensor Fabrication Guide on Amazon – Affordable Deal

$11.00 Buy on Amazon

Water Leak Detector 6 Pack, 5-Year Battery Life, Water Alarm with Low Battery Warning, 100dB Loud Sound and Self-Test Function, IP66 Waterproof for Home Basement Kitchen(Not Support Wi-Fi)

$11.00 Buy on Amazon

Zircon MultiScanner™ A250 Stud Finder Wall Scanner, All-in-One Wood and Metal Stud Detector with Live AC Wire Detection, 4 Scan Modes, LCD Display, SpotLite® Pointer and ACT™ Technology

$9.00 Buy on Amazon

Simple Motion Sensor Switch by Deako, Automatic Timer, Occupancy and Vacancy Modes, Auto On and Off, Single Pole, Neutral Wire Required, White

$9.00 Buy on Amazon

Franklin Sensors Prosensor M210 Stud Finder With 13-Sensors, Wood & Metal Stud Detector/Wall Scanner, Live Wire Detection, Made in the USA

$9.00 Buy on Amazon

HOUND-1011S Portable Radon Detector, High-Accuracy Sensor for Home, Lightweight, Audible & Visual Alarms, Long-Term Monitoring, Easy-to-Use Radon Tester in pCi/L or Bq/m³ for Basement

$9.00 Buy on Amazon

Leviton PIR Ceiling Mount Occupancy Sensor, 120-277V, 1000W, 570SF Field-of-View, ODC0S-I1W, White

$12.00 Buy on Amazon

Eve Motion (Matter) - Smart Motion Sensor with Light Sensor, IPX3 Water Resistance, Automatic Activation of Lights and Devices, Thread

$8.00 Buy on Amazon

Philips Hue Outdoor Motion Sensor, 1 Pack, Automatic Dusk to Dawn, Sensor Turns Lights On When Motion is Detected, Requires Bridge, Works with Alexa, Google Assistant, and Apple HomeKit, Weatherproof

$8.00 Buy on Amazon

3 Pakcs Combination Gas & Carbon Monoxide Detector, Plug in Carbon Monoxide Alarm & Natural Gas Detector,Propane,Methane,with Backup 9V Battery Feature, Digital Display, for Home, Apartment, RV

$12.00 Buy on Amazon

Lutron Caseta Smart Lighting Auto On/Off Motion Sensor, Lutron Motion Sensor for Dimmers, Switches, and Fan Controls, No Wires Required, PD-OSENS-WH, White

$8.00 Buy on Amazon

ecobee Smart Sensor for Doors & Windows 2 Pack - Wifi Contact Sensor for Home Security, Energy Savings - Compatible with Smart Thermostats - Temperature sensor, white

$8.00 Buy on Amazon

Geevon 10 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, Kitchens, Garages, and Attics, Water Alarms Battery-Operated (Battery Included)

$8.00 Buy on Amazon

Radon Detector for Home Radon Testing | 20 Year Sensor Life | Large Sensitive Sensor

$7.00 Buy on Amazon

Zooz Outdoor/Indoor Motion Sensor ZSE70, Z-Wave Long Range, Temperature Monitoring, 800 LR Range

$7.00 Buy on Amazon

Aeotec SmartThings Motion Sensor, Zigbee, Magnetic Mounting, Works with Smart Home Hub and Compatible Zigbee Hubs

$7.00 Buy on Amazon

Sewer Leak Detector | 10ft Drop Test Pass | Upgraded 10-Year Sensor Life | Version 2.0 |

$13.00 Buy on Amazon

Directed Electronics Install essentials Dual Zone Motion Sensor 508d

$7.00 Buy on Amazon

Philips Hue Motion Sensor - Exclusively for Philips Hue Smart Lights - Requires Hue Bridge - Easy No-Wire Installation

$7.00 Buy on Amazon

Leviton Multi-Technology Ceiling Mount Occupancy Sensor, 24VDC, 35mA; 1000SF Field-of-View, OSC10-M0W, White

$13.00 Buy on Amazon

THIRDREALITY Smart Presence Sensor R3, 60GHz mmWave Radar, USB-C Powered, RGB Light with Status Indication, Illumination Sensor, Zigbee Repeater, Compatible with Home Assistant(ZHA&Z2M), SmartThings

$7.00 Buy on Amazon

RV Carbon Monoxide & Propane Detectors, Replacement for Old RV Carbon Monoxide Detector #31011, 2 in 1 Dual CO/Gas Alarm with Digital Display and Screwdriver, Hardwired - VDC 12V, Flush Mount

$7.00 Buy on Amazon

RV Carbon Monoxide and Propane Detectors, Camper CO/LP Gas Alarm, 12V DC 3 Brackets Compatible with All Other Brands with Digital Display and Screwdriver, Flush & Surface Mount

$7.00 Buy on Amazon

Zircon MultiScanner™ A200 Stud Finder Wall Scanner, Electronic Wood and Metal Stud Detector with WireWarning® Detection, DeepScan®, LCD Display, SpotLite® Pointer and ACT™ Technology

$7.00 Buy on Amazon

Sensor Technology & Devices – Affordable Deal on Electronics Kit

$7.00 Buy on Amazon

Radon Detector by Forensics | Home Use | Upgraded 20-Year Sensor Life | Version 2.0 |

$13.00 Buy on Amazon

Propane Leak Detector | 20-Year Sensor Life | Nano-Oxide Sensor | Sewer Gas Leak, Natural Gas, Methane, Combustibles |

$6.00 Buy on Amazon

Kidde Carbon Monoxide Detector, Plug-In with 9V Battery Backup, Digital Display, 85 dB Alarm, LED Status Light Indicators, 3rd Edition

$6.00 Buy on Amazon

Wireless Human Presence Sensor LWR01, mmWave Radar, Occupancy & Motion Sensor, Battery-Powered, IPX3 Water Resistant, Matter Over Thread, Requires Thread-Compatible Smart Home Hub/Router

$6.00 Buy on Amazon

Franklin Sensors ProSensor M150/X990 Stud Finder with Live Wire Detection and 9-Sensors, Wood & Metal Stud Detector/Wall Scanner, Made in The USA

$6.00 Buy on Amazon

U UNNI CO2 Monitor for Home, 3 Adjustable Volume for Alerts & 3 Adjustable Backlight, Photoacoustic Sensor for Temperature Humidity & Indoor Air Quality Monitor

$6.00 Buy on Amazon

Geevon 8 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, Kitchens, Garages, and Attics, Water Alarms Battery-Operated (Battery Included)

$6.00 Buy on Amazon

TOPGREENER Dual Load Motion Sensor Switch, PIR Sensor Light and Fan Switch, Occupancy & Vacancy Modes, No Neutral Wire Required, Ground Wire Required, 150W LED/CFL, 1/4HP, Single Pole, TDOS5-JD, White

$6.00 Buy on Amazon

INKBIRDPLUS Portable CO2 Detector, Mini Indoor CO2 Monitor, NDIR Sensor with Full Color LCD, for Home, Office, Travel (PTH-10C)

$6.00 Buy on Amazon

Zooz 800 Series Z-Wave Long Range Water Leak XS Sensor ZSE42 800LR for for Smart Flood Prevention. Hub Required (Sold Separately). Compatible with SmartThings, Hubitat, and Z-Box Hub.

$6.00 Buy on Amazon

FloodStop Wired Water Sensor on Sale: Affordable Leak Detection Deal

$6.00 Buy on Amazon

Promtex 4 in 1 Portable Carbon Monoxide Dioxide Detector, Rechargeable CO CO2 Monitor Meter Air Quality Monitor with Magnetic & Lanyard for Home, Travel, RV, Camping with Temp/Humidity Sensor

$6.00 Buy on Amazon

Request to Exit PIR Motion Sensor Exit Infrared Detector for Exit for Automatic Opening Door Access Control

$6.00 Buy on Amazon

Aeotec SmartThings SmartThings Water Leak Sensor, ZigBee, Battery Powered, Smart Home Hub Compatible

$6.00 Buy on Amazon

3-in-1 EMF Meter for Electric Field (EF), Magnetic Field (MF), Radio Frequency (RF) Detection - EMF Radiation Tester for Home, Office, Outdoor, EMF Detector Meter

$14.00 Buy on Amazon

Wireless Motion Sensor Outlet with Timer, Plug-N-Play PIR Motion Activated Switch, Indoor Motion Detector for Lights & Exhaust Fan (110V-120V) of Bathroom, Garage, Laundry Room

$5.00 Buy on Amazon

THIRDREALITY Motion Sensor R1 with Case, 5.8G Radar,Adjustable Sensitivity,Indoor &Outdoor,Zigbee Hub Required,Support Home Assistant,SmartThings,Homey,Hubitat or Echo Devices with Built-in Zigbee hub

$5.00 Buy on Amazon

SANSI Motion Sensor Outdoor Lights, 15W 2000LM LED Flood Lights Outdoor, 5000K 4 Modes Security Lights for Outside Porch Yard Garage Patio, IP65 Dusk to Dawn Motion Detector Lights

$5.00 Buy on Amazon

EchoCheck Smart Propane Tank Sensor on Amazon – Great Low Price Deal

$5.00 Buy on Amazon

MR BEAMS MB530 LED Motion Sensor Light for Stairs Hallways, Auto Lights When Dark in Night Light Mode, Battery Operated

$5.00 Buy on Amazon

Orbit 71005 B-hyve Smart Flood Sensor - WiFi Water Leak Detector (5-Pack)

$5.00 Buy on Amazon

Water Leak Detector 8 Pack, 5-Year Battery Life, Water Alarm with Low Battery Warning, 100dB Loud Sound and Self-Test Function, IP66 Waterproof for Home Basement Kitchen(Not Support Wi-Fi)

$15.00 Buy on Amazon

SANSI 28W 3500LM Motion Sensor Outdoor Lights, Outdoor Motion Sensor Light Security Lights Detector with 4 Mode 350W Equiv 5000K, IP65 Waterproof for Soffit, Garage, Yard (Black) Hardwired

$5.00 Buy on Amazon

Sump Pump Alarm WiFi, Smart High/Low Water Level Alarm with Alarm-activated Outlet, Free App Alerts,Built-in Backup Battery,110dB Siren,10ft Float Switch for Septic Tank, Sump Pump, Ponds & Water Tank

$15.00 Buy on Amazon

Protocols and Architectures for Wireless Sensor Networks

$5.00 Buy on Amazon

meross Matter Human Presence Sensor, 3-in-1 PIR & Light & mmWave Radar Motion Sensor, AI Motion Detector for Matter Smart Home Automation, Supports HomeKit, Alexa, Google, Home Assistant, 2.4GHz Wi-Fi

$5.00 Buy on Amazon

3 Pack F-ire A-larms Operated with Photoelectric Sensor and Silence Button, Travel Portable

$5.00 Buy on Amazon

Leviton Multi-Technology Ceiling Mount Occupancy Sensor, 24VDC, 35mA; 2000SF Field-of-View, OSC20-M0W, White

$16.00 Buy on Amazon

Blütezeit Retro-Reflective Photoelectric Sensor, 40ft Visible Red Beam Wall Mounted for Automatic Swing & Sliding Gate Openers Indoor/Outdoor, Compatible with Blütezeit Gate Motors (ME-R12M1)

$4.00 Buy on Amazon

Lattice-mismatched Epitaxy for Fabricating HgCdTe Infrared Materials and Detectors (IOP Series in Sensors and Sensor Systems)

$4.00 Buy on Amazon

Front Radar Sensor Protector Cover Compatible with for 2023-2025 All Honda CR-V Models Anti Theft Distance Radar Sensor Protection Bracket Accessories with Screws

$4.00 Buy on Amazon

Eaton OS306U-W 600W Wall Mount Occupancy Vacancy Sensor Without Wallplate, White

$4.00 Buy on Amazon

Leviton Decora Motion Sensor In-Wall Switch, Auto-On, 2.5A, Single Pole, IPS02-1LW, White

$4.00 Buy on Amazon

ENERLITES High Bay Ceiling Motion Sensor, Passive Infrared PIR Ceiling Sensor, 360° Field of View, 2800 Sq Ft Coverage, 120-277VAC, Neutral Wire Required, Commercial/Industrial Grade, MPC-50H, White

$4.00 Buy on Amazon

ENERLITES Low Voltage Ceiling Sensor Pir Occupancy Motion Detector, 360° Field of View, 1200 Sq Ft Coverage, Commercial/Industrial Grade, MPC-50L, White

$4.00 Buy on Amazon

SONOFF Zigbee Human Presence Sensor, SNZB-06P Zigbee Smart Motion Detector with 5.8GHZ cmWave Radar, Requires ZigBee Bridge (1-Pack)

$4.00 Buy on Amazon

SONOFF SNZB-06P24 Zigbee Presence Sensor, 24GHz mmWave & Light Sensor, Zone Positioning, Self-Learning Calibration, Ceiling Mount, Works with Home Assistant, Alexa, SmartThings, Hub Required

$4.00 Buy on Amazon

Talking Products, Voice Recordable PIR Infrared Motion Sensor Detector with Multi-Track Playback. Record or Download Your own Custom MP3 Files to Play Speech, Music or Sound Effects for Halloween

$4.00 Buy on Amazon

Geevon 6 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, Kitchens, Garages, and Attics, Water Alarms Battery-Operated (Battery Included)

$4.00 Buy on Amazon

Kidde WiFi Water Leak Detector & Freeze Alarm, Alexa Device, Smart Leak Detector for Homes with App Alerts,White

$4.00 Buy on Amazon

SimpliSafe MS3 Motion Sensor White – Great Deal & Low Price on Amazon

$4.00 Buy on Amazon

X-Sense Smart Water Leak Detector, Wi-Fi Water Sensor, an Accessory for SWS54 Water Sensor Kit, Single Pack, Model SWS51, 3-Pack

$4.00 Buy on Amazon

Maxxima Ceiling Mount 360 Degree PIR Occupancy Sensor - Hard-Wired Motion Sensor, LED Compatible, Commercial or Residential Automatic Sensing Solution for Indoor Use at Max Height 15ft, 120-277V

$4.00 Buy on Amazon

meross Matter Presence Sensor MS605, Battery-Powered 4-in-1 Smart Motion Sensor with AI Learning, IP67 PIR & Light & mmWave Radar, Matter Over Thread, Supports Home Assistant, HomeKit, Alexa (1 Pack)

$4.00 Buy on Amazon