Ionization Detectors(18)
Uses item details. Price when purchased online
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch From $65.00

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From$6500
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch
3124.4 out of 5 Stars. 312 reviews
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Rely 7400 2-in-1 Smoke & Carbon Monoxide Detector — Hardwired AC Powered with Battery Backup - RealAlerts Voice & LED Warning System - Photoelectric Smoke and CO Detector - Interconnect - 1 Pack $69.99

Sponsored
$6999
current price $69.99Rely 7400 2-in-1 Smoke & Carbon Monoxide Detector — Hardwired AC Powered with Battery Backup - RealAlerts Voice & LED Warning System - Photoelectric Smoke and CO Detector - Interconnect - 1 Pack
85 out of 5 Stars. 8 reviews
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SITERWELL Smoke Detector 10 Year Battery Operated, Photoelectric,85 Db,UL217-9th Standards,Rlectrochemical Sensors, Bilingual Voice Alerts,4 packs From $24.80

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From$2480
SITERWELL Smoke Detector 10 Year Battery Operated, Photoelectric,85 Db,UL217-9th Standards,Rlectrochemical Sensors, Bilingual Voice Alerts,4 packs
154.9 out of 5 Stars. 15 reviews
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SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor and Low Battery Warning Function for House, ETL-9th Listed, GS509A, 5 Pack From $19.12

Sponsored
From$1912
SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor and Low Battery Warning Function for House, ETL-9th Listed, GS509A, 5 Pack
5454.4 out of 5 Stars. 545 reviews
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First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization $50.22

$5022
current price $50.22First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization
1244.2 out of 5 Stars. 124 reviews
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First Alert 1046856, 10 Year Battery Ionization Smoke Alarm $24.47

$2447
current price $24.47First Alert 1046856, 10 Year Battery Ionization Smoke Alarm
654.5 out of 5 Stars. 65 reviews
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First Alert SMICO100 Battery-Operated 2-in-1 Smoke and CO Alarm, Ionization $39.99

$3999
current price $39.99First Alert SMICO100 Battery-Operated 2-in-1 Smoke and CO Alarm, Ionization
674.2 out of 5 Stars. 67 reviews
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BRK Battery-Powered Ionization Smoke Detector $19.95

$1995
current price $19.95BRK Battery-Powered Ionization Smoke Detector
214.4 out of 5 Stars. 21 reviews
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BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector $24.99 Was $29.00

Now$2499
current price Now $24.99, Was $29.00$29.00
BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector
1414.7 out of 5 Stars. 141 reviews
First Alert FG250B Battery Operated Smoke Alarm, Dual Ionization, 85 dB

First Alert FG250B Battery Operated Smoke Alarm, Dual Ionization, 85 dB
464.4 out of 5 Stars. 46 reviews
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Estrotect Heat Detector w/Bullseye $79.99

Sponsored
$7999
current price $79.99Estrotect Heat Detector w/Bullseye
15 out of 5 Stars. 1 reviews
First Alert PRC710, Battery-Powered Ionization Smoke Alarms $21.99

$2199
current price $21.99First Alert PRC710, Battery-Powered Ionization Smoke Alarms
274.6 out of 5 Stars. 27 reviews
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BRK Hard-Wired w/Battery Back-Up Ionization Smoke and Carbon Monoxide Detector Was $64.00

BRK Hard-Wired w/Battery Back-Up Ionization Smoke and Carbon Monoxide Detector
664.4 out of 5 Stars. 66 reviews
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Ademco 5050065 First Alert 10 Year Hard-Wired with Battery Back-Up Ionization Smoke & Carbon Monoxide Detector $61.20 Was $68.00

Now$6120
current price Now $61.20, Was $68.00$68.00
Ademco 5050065 First Alert 10 Year Hard-Wired with Battery Back-Up Ionization Smoke & Carbon Monoxide Detector
15 out of 5 Stars. 1 reviews
BRK Battery-Powered Ionization Smoke and Carbon Monoxide Detector $42.95

$4295
current price $42.95BRK Battery-Powered Ionization Smoke and Carbon Monoxide Detector
64.8 out of 5 Stars. 6 reviews
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Kidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector $51.00

$5100
current price $51.00Kidde Worry-Free Battery-Powered Electrochemical/Ionization/Photoelectric Smoke and Carbon Monoxide Detector
1461.3 out of 5 Stars. 146 reviews
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USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels $99.99

$9999
current price $99.99USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels
474.3 out of 5 Stars. 47 reviews
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BRK fg250b, Battery Dual Ionization Sensor Smoke Alarm $36.99

$3699
current price $36.99BRK fg250b, Battery Dual Ionization Sensor Smoke Alarm
94.6 out of 5 Stars. 9 reviews
Other options to consider(28)
ERICKHILL EMF Meter, Rechargeable, Digital LCD, Radiation Detector with Buzzer Alarm, Blue $39.99

$3999
current price $39.99ERICKHILL EMF Meter, Rechargeable, Digital LCD, Radiation Detector with Buzzer Alarm, Blue
35 out of 5 Stars. 3 reviews
BIMZUC 3 in 1 EMF Meter Electromagnetic Radiation Detector Electric Field Intensity Tester Magnetic Field Intensity Test Meter Black 6.69 inches / 17 cm $44.70

$4470
current price $44.70BIMZUC 3 in 1 EMF Meter Electromagnetic Radiation Detector Electric Field Intensity Tester Magnetic Field Intensity Test Meter Black 6.69 inches / 17 cm
BIMZUC Handheld EMF Meter Portable Electromagnetic Radiation Tester Household Laboratory Digital Electric Field Detector Multi-functional Radioactive Detector Black and Red Accurate Tool From $13.76
From$1376
BIMZUC Handheld EMF Meter Portable Electromagnetic Radiation Tester Household Laboratory Digital Electric Field Detector Multi-functional Radioactive Detector Black and Red Accurate Tool
BIMZUC Electromagnetic Fields Meter 3 in 1 Multifunctional Digital Radiation Detector for RF and Magnetic Fields $45.94

$4594
current price $45.94BIMZUC Electromagnetic Fields Meter 3 in 1 Multifunctional Digital Radiation Detector for RF and Magnetic Fields
Clearance INKBIRD Radon Detector, Alpha Spectrometer Sensor, Radon Level Indicator, Batteries Powered, Long-term and Short-term monitoring $96.99 Was $139.99

Now$9699
current price Now $96.99, Was $139.99$139.99
INKBIRD Radon Detector, Alpha Spectrometer Sensor, Radon Level Indicator, Batteries Powered, Long-term and Short-term monitoring
54 out of 5 Stars. 5 reviews
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Best seller Airthings Corentium Home Radon Detector 2350 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L $86.99

$8699
current price $86.99Airthings Corentium Home Radon Detector 2350 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, USA Version, pCi/L
1144.3 out of 5 Stars. 114 reviews
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VEVOR Radon Detector for Home, 3.3Bq to 37kBq/m, Radon Meter, Portable Battery Powered Radon & Air Quality Monitor, Color Display,Long-Term Radon Concentration Monitoring,Rechargeable or Wired Use $83.99

$8399
current price $83.99VEVOR Radon Detector for Home, 3.3Bq to 37kBq/m, Radon Meter, Portable Battery Powered Radon & Air Quality Monitor, Color Display,Long-Term Radon Concentration Monitoring,Rechargeable or Wired Use
14 out of 5 Stars. 1 reviews
NFTIGB EMF Meter High Accuracy Electromagnetic Field Radiation Detector for Electrical Appliance, Black (5.6 inches / 14.3 cm)
NFTIGB EMF Meter High Accuracy Electromagnetic Field Radiation Detector for Electrical Appliance, Black (5.6 inches / 14.3 cm)
First Alert Standard Battery-Operated Smoke Alarm and CO Alarm Value 2 Pack with Models SMI100 and CO400 , 1046718 $55.99

$5599
current price $55.99First Alert Standard Battery-Operated Smoke Alarm and CO Alarm Value 2 Pack with Models SMI100 and CO400 , 1046718
11 out of 5 Stars. 1 reviews
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Kidde Dual Sensor Smoke Alarm, 85 Decibels, KIDDE From $27.94

2 options
Available in additional 2 optionsFrom$2794
Kidde Dual Sensor Smoke Alarm, 85 Decibels, KIDDE
664.4 out of 5 Stars. 66 reviews
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BIMZUC Radiation Detector Black Digital EMF Meter LED Display Handheld RF Electric Field Magnetic Field Level Alert Geiger Counter for Home Office Industrial Use $33.94

$3394
current price $33.94BIMZUC Radiation Detector Black Digital EMF Meter LED Display Handheld RF Electric Field Magnetic Field Level Alert Geiger Counter for Home Office Industrial Use
Elowen Portable Radiative Meter Handheld Radioactive Detector RF EF MF Meter WiFi 5G Visual Audible Alarm Electric Field Meter for Home Laboratory $34.03

$3403
current price $34.03Elowen Portable Radiative Meter Handheld Radioactive Detector RF EF MF Meter WiFi 5G Visual Audible Alarm Electric Field Meter for Home Laboratory
Rely 7400 2-in-1 Smoke & Carbon Monoxide Detector Hardwired AC Powered with Battery Backup - RealAlerts Voice & LED Warning System - Photoelectric Smoke and CO Detector - Interconnect - 1 Pack $69.99

$6999
current price $69.99Rely 7400 2-in-1 Smoke & Carbon Monoxide Detector Hardwired AC Powered with Battery Backup - RealAlerts Voice & LED Warning System - Photoelectric Smoke and CO Detector - Interconnect - 1 Pack
85 out of 5 Stars. 8 reviews
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Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM From $27.94

3 options
Available in additional 3 optionsFrom$2794
Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM
7424.6 out of 5 Stars. 742 reviews
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Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch From $34.84

2 options
Available in additional 2 optionsFrom$3484
Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch
1623.8 out of 5 Stars. 162 reviews
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First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery

First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery
4874.5 out of 5 Stars. 487 reviews
Kidde AA Battery Operated Basic Carbon Monoxide Alarm - 9CO5-LP3 $23.44

$2344
current price $23.44Kidde AA Battery Operated Basic Carbon Monoxide Alarm - 9CO5-LP3
5494.6 out of 5 Stars. 549 reviews
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Knox Safety Battery Operated Carbon Monoxide Detector, Voice Alert & Display, 10-Year Lithium Power From $41.97

2 options
Available in additional 2 optionsFrom$4197
Knox Safety Battery Operated Carbon Monoxide Detector, Voice Alert & Display, 10-Year Lithium Power
4024.2 out of 5 Stars. 402 reviews
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Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup From $51.00

3 options
Available in additional 3 optionsFrom$5100
Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup
1914 out of 5 Stars. 191 reviews
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Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch From $65.00

2 options
Available in additional 2 optionsFrom$6500
Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch
3124.4 out of 5 Stars. 312 reviews
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Best seller Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators From $27.47

3 options
Available in additional 3 optionsFrom$2747
Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators
18004.7 out of 5 Stars. 1800 reviews
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Popular in Ionization Detectors
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