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  Our Catalog   Safety & Security   Household Sensors & Alarms

Household Sensors & Alarms - 142 - Blowout Sale! Save up to 58%


Blowout Sale! Up to 58% off on Household Sensors & Alarms at Knights Of Labor. Top brands include Kidde, First Alert, Eachbid, Gentex, kwmobile, Sweet Melodi, APC, Unknown, MonkeyJack, i-POOK, Reusable Revolution, JCHENG SECURITY, MESMART, Control Products, CoolCam, BOXMART, ERAY, Topvico, & Mitaki. Hurry! Limited time offers. Offers valid only while supplies last.



Nighthawk AC Plug-in Operated Carbon Monoxide Alarm with Digital Display KN-COPP-3
Nighthawk AC Plug-in Operated Carbon Monoxide Alarm with Digital Display KN-COPP-3
By Kidde
In Stock
$69.99
$29.31
You Save: 58%

mpn: 900-0076, ean: 5526680000765,

4.1 out of 5 stars with 18 reviews
Peak Level Button - Displays the peak CO level recorded by the alarm since it was last reset or unplugged. 9V Battery Backup - Provides protection during power outage. Test Button Functions - Tests the unit for proper operation and resets the C...


Kidde Battery Operated Combination Smoke & Carbon Monoxide Alarm KN-COSM-BA
Kidde Battery Operated Combination Smoke & Carbon Monoxide Alarm KN-COSM-BA
By Kidde
In Stock
$44.99
$31.60
You Save: 30%

mpn: 21026043, ean: 0047871260430,

4.4 out of 5 stars with 53 reviews
The Kidde KN-COSM-BA Combination Carbon Monoxide & Smoke Alarm provides two important safety devices in a single unit. This alarm includes a voice warning system that announces “Fire, Carbon Monoxide, Low Battery and Smart Hush Activation.” The v...


First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup
First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup
By First Alert
In Stock
$41.99
$18.19
You Save: 57%

mpn: FATCO605, ean: 0881110026483,

4.4 out of 5 stars with 59 reviews
Keep your family safe with this easy-to-use plug-in carbon monoxide alarm; it works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure. Features an advanced elec...


Eachbid Oxygen Meter Portable Oxygen(O2) Concentration Detector with LCD Display and Sound-light Alarm
Eachbid Oxygen Meter Portable Oxygen(O2) Concentration Detector with LCD Display and Sound-light Alarm
By Eachbid
In Stock
$199.01
$142.00
You Save: 29%

mpn: EB611891, ean: 0615350611891,

4.5 out of 5 stars with 24 reviews
Feature: The menu operation interface, power from the battery to display in real time. Under the pressure, the low voltage automatic shutdown. Rapid response and reliable precision. Sound, light and vibrating alarm. Specification: The electrochemical...


Gentex GXS-120177WR Fire Evacuation, 120VAC Remote Evacuation Strobe - Red Faceplate
Gentex GXS-120177WR Fire Evacuation, 120VAC Remote Evacuation Strobe - Red Faceplate
By Gentex
In Stock
$65.65
$48.79
You Save: 26%

mpn: GXS-120177WR, ean: 0700217011584,

4.4 out of 5 stars with 45 reviews
The Gentex GXS-120177WR is a red, wall-mount fixed-candela 120VAC remote strobe....


kwmobile door and window alarmset - 4 set of acoustic burglar alarms including batteries - wireless alarm system - 100dB volume - Home Security
kwmobile door and window alarmset - 4 set of acoustic burglar alarms including batteries - wireless alarm system - 100dB volume - Home Security
By kwmobile
In Stock
$12.40

mpn: 40732, ean: 4057665206564,

kwmobile - Made for Smart ElectronicsWith the door and window alarm you can secure your home.GIVE BURGLARS NO CHANCEThe 4-pack allows you to protect up to four doors / windows from thieves and burglars.RIGHT AND LEFTThe window and door alarm can be f...


LED Warning Light Signal Tower LampIndustrial 105-110dB Buzzer Siren AC 110V (Blue)
LED Warning Light Signal Tower LampIndustrial 105-110dB Buzzer Siren AC 110V (Blue)
By Sweet Melodi
In Stock
$19.99

ean: 0659103719861,

Durable and Safe:Material: PC+PP+ABSWaterproof: You can even use it in rainy daysLED with low voltage,use with confidenceMulti-functional Night Warning Lights:◆ House / Garden - keep the animals away◆ Vehicle surface - warning other cars stay awa...


APC Smartslot Measure-Ups Ii Temperature and Humidity Sensors
APC Smartslot Measure-Ups Ii Temperature and Humidity Sensors
By APC
In Stock
$43.99

mpn: AP9612TH, ean: 0731304002666,

pEmbedded card enabling monitoring of environmental conditions./pVelocity-sensitive drum pad with real mylar drumhead and triple-flanged hoop. Dual-zone sensing enables triggering sounds from the head and rim. Head tension can be adjusted with a stan...


Gas Sensor Alarm - Gas Detector Alarm Sensor - Combustible Gas Propane LPG Gas Leak Sensor Warning Alarm Detector Tester (Gas Detector Alarm)
Gas Sensor Alarm - Gas Detector Alarm Sensor - Combustible Gas Propane LPG Gas Leak Sensor Warning Alarm Detector Tester (Gas Detector Alarm)
By Unknown
In Stock
$20.96

mpn: 634790677311, ean: 0634790677311,

Gas Sensor Alarm - Gas Detector Alarm Sensor - Gas Detector Alarm | Features : This detector is built-in high quality gas sensor. processor and precision temperature sensor could make up the gas components' drifting smartly. It works normal in variou...


MonkeyJack 2PCS Practical Door Knob Handle Alarm Door Alarm Burglar Alarm for Home Dorm Travelling Hotel Use
MonkeyJack 2PCS Practical Door Knob Handle Alarm Door Alarm Burglar Alarm for Home Dorm Travelling Hotel Use
By MonkeyJack
In Stock
$13.99

mpn: 3815a1aa90c6b2b8cac506da9b57b51a, ean: 0722267192945,

Description: - Just hang the alarm in door handle/knob, when there is someone opens the door or touches the door handle from either side, the alarm will generate loud alarm sound to inform there is a intruder. - Work as an anti-theft alarm, alarm sir...


i-POOK 602 Mini Combustible Gas Detector Analyzer Gas Leak Tester with Sound and Light Alarm
i-POOK 602 Mini Combustible Gas Detector Analyzer Gas Leak Tester with Sound and Light Alarm
By i-POOK
In Stock
$31.99

mpn: 602,

Pattern:602Description:Portable Mini Combustible Gas Detector Analyzer Gas Leak Tester with Sound and Light Alarm Features: Portable detector for detecting combustible gas.Can continuously monitor the combustible gas concentration in the surrounding ...


Wireless Home Security System - 1x Alarm + 2x Sensor Set by Reusable Revolution
Wireless Home Security System - 1x Alarm + 2x Sensor Set by Reusable Revolution
By Reusable Revolution
In Stock
$19.99

mpn: TN-1200665, ean: 0841478129004,

Protect your home from unwanted visitors with this Wireless Home Security System Alarm & Sensor Set by Reusable Revolution! This easy to install security system can be placed near garage or front doors, store entrances, or driveways, to let you know ...


JC Wireless 433MHz Water Sensor, Flood Leakage Senor Indoor Easy Use
By JCHENG SECURITY
In Stock
$19.99

ean: 0606462991179,

Features: It adopted the detected theory of water leakage, once it detects any water, it will automatically send wireless signal to the control center (alarm host). It needs to work with alarm host, can't work alone. It protects in 24 hours to preve...


MESMART Smart Water Leak Sensor Detector (Hub Required) Monitor Flood Leaking at Home Office Laboratory Warehouse APP Alarm Reminder Detection Compatible with Amazon Alexa Echo
MESMART Smart Water Leak Sensor Detector (Hub Required) Monitor Flood Leaking at Home Office Laboratory Warehouse APP Alarm Reminder Detection Compatible with Amazon Alexa Echo
By MESMART
In Stock
$163.01
$99.00
You Save: 39%

mpn: 2, ean: 0747100530111,

4.7 out of 5 stars with 32 reviews
MESMART, the professional designer and producer for home automation system and all the related smart items. Aims to create a more comfortable and convenient life for people all over the world. "Control Everything in Your Hand" , that's the eternal th...


Control Products FA-B-CCA Basic FreezeAlarm with Voice Alarm
Control Products FA-B-CCA Basic FreezeAlarm with Voice Alarm
By Control Products
In Stock
$69.99

mpn: FA-B-CCA, ean: 0733876100054,

Basic Freeze Alarm, Automatically Calls 1 Phone Number When The Temperature Drops Below 45 Degrees, Plays An Alarm Message To The Person Answering The Phone, Continues To Call The Phone Number Until The Alarm Is Acknowledged, Installs In Seconds and ...


Coolcam Smart Wi-Fi Water Sensor, Flood and Leak Detector Alarm and App Notification Alerts, No Hub Required, Simple Plug & Play Set Up
Coolcam Smart Wi-Fi Water Sensor, Flood and Leak Detector Alarm and App Notification Alerts, No Hub Required, Simple Plug & Play Set Up
By CoolCam
In Stock
$29.95

mpn: NAS-WS01W, ean: 0708041910509,

Live smarter and make your life easier. Coolcam Water Sensor allows you to improve the safety of your home and family easily and effectively. With discreet compact design, these water sensors provide instant and reliable performance as part of your h...


Gas Detector, BOXMART Natural Gas Leak Detector Combustible Gas Sniffer Propane/LPG/ LNG/Butane/ Coal Gas Alarm Sensor with Sound Light Warning (Standard Version)
Gas Detector, BOXMART Natural Gas Leak Detector Combustible Gas Sniffer Propane/LPG/ LNG/Butane/ Coal Gas Alarm Sensor with Sound Light Warning (Standard Version)
By BOXMART
In Stock
$49.99

ean: 0788537992868,

Features: It will automatically Beep loud with LED light flashing while detects gas leaking. Gas detected: Natural gas, coal gas, LPG, LNG, propane, butane and other combustible gas Variety used for home and many work places with combustible gas. ...


ERAY Driveway Alarm Wireless DW9, Weatherproof Outdoor Motion Sensor Detector DIY Yard Garage Gate Pool Security Alert System Kit
ERAY Driveway Alarm Wireless DW9, Weatherproof Outdoor Motion Sensor Detector DIY Yard Garage Gate Pool Security Alert System Kit
By ERAY
In Stock
$69.99
$57.99
You Save: 17%

mpn: DW9, ean: 0705604678647,

4.9 out of 5 stars with 30 reviews
Specification: Alarm Host • Defense Zone: 4 zones, Max support 8 PIR motion detector(2 per zone) • Light Color of Zone: Zone 1 - Red; Zone 2 - Green; Zone 3 - Blue; Zone 4 - Purple • Prompt Tones of Zones: 16 selectable music tones • Volume A...


Topvico Smart Door Sensor WIFI APP Control 110dB Chime Open Door/Window Alarm Sensors (2 Pack), No Hub Required, Battery powered
Topvico Smart Door Sensor WIFI APP Control 110dB Chime Open Door/Window Alarm Sensors (2 Pack), No Hub Required, Battery powered
By Topvico
In Stock
$49.95
$39.95
You Save: 20%

mpn: TP-407D-2, ean: 0603894417208,

4.7 out of 5 stars with 13 reviews
Advantages-WIFI connect directly (not support 5G WIFI), no hub required, Multi-user support, administrator can share to no limited users-Cellphone human voice notice + APP message notification + max 110dB local alarm voice (3 level adjust, delay time...


Door Wedge Alarms (pack of 2)
Door Wedge Alarms (pack of 2)
By Mitaki
In Stock
$10.99

mpn: Dani JLN eldrstp2, ean: 0024409940842,

Includes 2 Security Alarms!! Scare Away Intruders The wedge shaped design is made to fit for hinged doors. When the door is opened it compresses the door stop triggering the alarm. The 118 dB alarm when the siren is triggered. Adjustable Sensitivity...



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