Smoke & Gas Detectors | Surplus Network

First Alert BRK 9120B Smoke Detector Alarm AC with INCLUDED Battery Back-Up

First Alert BRK 9120B Smoke Detector...

$12.95 USD

First Alert BRK 9120B Smoke Detector...

$12.95 USD

Smoke Alarm CO Carbon Monoxide Detector Sound and Light Sensor House Apartment

Smoke Alarm CO Carbon Monoxide...

$7.59 USD

Smoke Alarm CO Carbon Monoxide...

$7.59 USD

Smoke Detector Fire Sentry Alarm Home Fire Safety 9V Battery Operated (Included)

Smoke Detector Fire Sentry Alarm Home...

$7.59 USD

Smoke Detector Fire Sentry Alarm Home...

$7.59 USD

Smoke Detector Fire Sentry Alarm Home Fire Safety 9V Battery Operated (Included)

Smoke Detector Fire Sentry Alarm Home...

$7.59 USD

Smoke Detector Fire Sentry Alarm Home...

$7.59 USD

Smoke Detector Fire Sentry Alarm Home Fire Safety 9V Battery Operated (Included)

Smoke Detector Fire Sentry Alarm Home...

$7.59 USD

Smoke Detector Fire Sentry Alarm Home...

$7.59 USD

2xCO Carbon Monoxide Alarm Poisoning Smoke Co Gas Sensor Warning Detector Tester

2xCO Carbon Monoxide Alarm Poisoning...

$15.78 USD

2xCO Carbon Monoxide Alarm Poisoning...

$15.78 USD

2pcs Fire Smoke Detector Alarm Fire Safety Alert 9V Battery Operated (Included)

2pcs Fire Smoke Detector Alarm Fire...

$10.99 USD

2pcs Fire Smoke Detector Alarm Fire...

$10.99 USD

Siterwell GS528A Smoke Detector Fire Alarm Battery Operated (Battery Included)

Siterwell GS528A Smoke Detector Fire...

$10.99 USD

Siterwell GS528A Smoke Detector Fire...

$10.99 USD

Siterwell Smoke Alarm Detector Sensor Battery Operated Home Fire Safety Alert

Siterwell Smoke Alarm Detector Sensor...

$10.99 USD

Siterwell Smoke Alarm Detector Sensor...

$10.99 USD

Siterwell Smoke Detector Smart Home Security Protection Fire Alarm Gas Detector

Siterwell Smoke Detector Smart Home...

$10.99 USD

Siterwell Smoke Detector Smart Home...

$10.99 USD

First Alert BRK 9120B Smoke Detector Alarm AC with INCLUDED Battery Back-Up

First Alert BRK 9120B Smoke Detector...

$10.99 USD

First Alert BRK 9120B Smoke Detector...

$10.99 USD

Ring Alarm smoke &CO Listener - Brand...

$34.00 USD

Ring Alarm smoke &CO Listener - Brand...

$34.00 USD

AIRTHINGS RADON DETECTOR #2350 New Sealed.

AIRTHINGS RADON DETECTOR #2350 New...

$69.90 USD

AIRTHINGS RADON DETECTOR #2350 New...

$69.90 USD

Kidde i4618AC Firex Hardwire Ionization Smoke Detector With Battery Backup

Kidde i4618AC Firex Hardwire...

$14.70 USD

Kidde i4618AC Firex Hardwire...

$14.70 USD

Best CO Alarm Carbon Monoxide Detector Sound and Light Sensor Apartment Home US

Best CO Alarm Carbon Monoxide...

$10.48 USD

Best CO Alarm Carbon Monoxide...

$10.48 USD

2pcs CO Carbon Monoxide Detector Alarm CO Gas Audio Warning High Alert Security

2pcs CO Carbon Monoxide Detector...

$15.79 USD

2pcs CO Carbon Monoxide Detector...

$15.79 USD

Kidde Nighthawk KN-COEG-3 Explosive Gas & Carbon Monoxide Alarm Detector

Kidde Nighthawk KN-COEG-3 Explosive...

$36.89 USD

Kidde Nighthawk KN-COEG-3 Explosive...

$36.89 USD

Kidde Firex Night Hawk Carbon Monoxide Alarm Detector Digital Batteries Included

Kidde Firex Night Hawk Carbon...

$16.95 USD

Kidde Firex Night Hawk Carbon...

$16.95 USD

First Alert BRK 7010B Hardwired Smoke Detector with Photoelectric Sensor

First Alert BRK 7010B Hardwired Smoke...

$16.95 USD

First Alert BRK 7010B Hardwired Smoke...

$16.95 USD

Smoke Detector and Carbon Monoxide Detector Alarm with LCD Display and 3 Battery

Smoke Detector and Carbon Monoxide...

$20.99 USD

Smoke Detector and Carbon Monoxide...

$20.99 USD

2GIG Smoke Heat Freeze Wireless Alarm Detector 2GIG-SMKT3-345 NEW

2GIG Smoke Heat Freeze Wireless Alarm...

$25.00 USD

2GIG Smoke Heat Freeze Wireless Alarm...

$25.00 USD

NEW KIDDE FIREX SMOKE ALARM DETECTOR

NEW KIDDE FIREX SMOKE ALARM DETECTOR

$12.99 USD

NEW KIDDE FIREX SMOKE ALARM DETECTOR

$12.99 USD

Siterwell Smart Smoke Detector 10 Year battery Powered Smoke Machine Alarm

Siterwell Smart Smoke Detector 10...

$12.99 USD

Siterwell Smart Smoke Detector 10...

$12.99 USD

2nd gen Nest Protect replacement mounting plate

2nd gen Nest Protect replacement...

$12.99 USD

2nd gen Nest Protect replacement...

$12.99 USD

2in1 LCD Display Carbon Monoxide & Smoke Combo Detector w/ Battery Sound Warning

2in1 LCD Display Carbon Monoxide &...

$17.59 USD

2in1 LCD Display Carbon Monoxide &...

$17.59 USD

First Alert BRK 9120B Hardwired AC Powered Smoke Detector Alarm w/Battery Backup

First Alert BRK 9120B Hardwired AC...

$15.52 USD

First Alert BRK 9120B Hardwired AC...

$15.52 USD

KIDDE/FIREX KN-COSM-IBA COMBINATION SMOKE AND CARBON MONOXIDE ALARM NEW 2022

KIDDE/FIREX KN-COSM-IBA COMBINATION...

$31.99 USD

KIDDE/FIREX KN-COSM-IBA COMBINATION...

$31.99 USD

Brand New Honeywell 5800SMOKEV,...

$67.99 USD

Brand New Honeywell 5800SMOKEV,...

$67.99 USD

Lot Of 10 kidde Smoke and Carbon Monoxide Detector Alarm With Voice# KN-COSM-IBA

Lot Of 10 kidde Smoke and Carbon...

$280.00 USD

Lot Of 10 kidde Smoke and Carbon...

$280.00 USD

SITERWELL Photoelectric MINI Smoke Detector Alarm 10 Y Battery for Home Hotel

SITERWELL Photoelectric MINI Smoke...

$14.99 USD

SITERWELL Photoelectric MINI Smoke...

$14.99 USD

First Alert, BRK 9120B AC Powered Smoke Detector Alarm with Battery Backup

First Alert, BRK 9120B AC Powered...

$14.99 USD

First Alert, BRK 9120B AC Powered...

$14.99 USD

1-4X CO Alarm Carbon Monoxide Detector Sound and Light Sensor Apartment Home US

1-4X CO Alarm Carbon Monoxide...

$26.48 USD

1-4X CO Alarm Carbon Monoxide...

$26.48 USD

First Alert BRK SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power

First Alert BRK SC9120B Combination...

$30.00 USD

First Alert BRK SC9120B Combination...

$30.00 USD

KIDDE/FIREX 900-CUAR COMBINATION SMOKE AND CARBON MONOXIDE ALARM New Design.

KIDDE/FIREX 900-CUAR COMBINATION...

$30.00 USD

KIDDE/FIREX 900-CUAR COMBINATION...

$30.00 USD

Brand New Honeywell 5808W3 Wireless...

$69.99 USD

Brand New Honeywell 5808W3 Wireless...

$69.99 USD

Air Things Digital Radon Gas Detector

Air Things Digital Radon Gas Detector

$69.99 USD

Air Things Digital Radon Gas Detector

$69.99 USD

2 x Siterwell Smoke Detector Alarm Home Fire Safety Battery Operated (Included)

2 x Siterwell Smoke Detector Alarm...

$22.99 USD

2 x Siterwell Smoke Detector Alarm...

$22.99 USD

2GIG C03-345 Wireless Carbon Monoxide Home Gas Alarm Detector

2GIG C03-345 Wireless Carbon Monoxide...

$50.00 USD

2GIG C03-345 Wireless Carbon Monoxide...

$50.00 USD

Kidde Smoke Alarm Set i9010 Lithium-Ion Battery Ionization Smoke Alarm, Two Pack

Kidde Smoke Alarm Set i9010...

$23.99 USD

Kidde Smoke Alarm Set i9010...

$23.99 USD

AIRTHINGS Digital Radon Detector

AIRTHINGS Digital Radon Detector

$70.00 USD

AIRTHINGS Digital Radon Detector

$70.00 USD

Kidde i4618AC Firex Hardwire Smoke Detector With Battery Backup - 2 Pack

Kidde i4618AC Firex Hardwire Smoke...

$18.99 USD

Kidde i4618AC Firex Hardwire Smoke...

$18.99 USD

Tuya Wifi Smoke Detector Sensor 90DB Alarm Fire Smart Smoke Detector HighQuality

Tuya Wifi Smoke Detector Sensor 90DB...

$18.99 USD

Tuya Wifi Smoke Detector Sensor 90DB...

$18.99 USD

Samsung SmartThings ADT Carbon Monoxide Alarm

Samsung SmartThings ADT Carbon...

$9.50 USD

Samsung SmartThings ADT Carbon...

$9.50 USD

NEW First Alert Smoke Alarm Slim...

$13.99 USD

NEW First Alert Smoke Alarm Slim...

$13.99 USD

Siterwell Home Smart Smoke Detector Alarm 10 Year battery Powered Photoelectric

Siterwell Home Smart Smoke Detector...

$13.99 USD

Siterwell Home Smart Smoke Detector...

$13.99 USD

1 Pack Gas Detector Carbon Monoxide,CO Detection Alarm LCD Portable Security

1 Pack Gas Detector Carbon...

$12.69 USD

1 Pack Gas Detector Carbon...

$12.69 USD

Siterwell Carbon Monoxide Alarm Detector + 7 Year Life Batteries Operated 4 Pack

Siterwell Carbon Monoxide Alarm...

$59.39 USD

Siterwell Carbon Monoxide Alarm...

$59.39 USD

First Alert Smoke and Carbon Monoxide...

$26.00 USD

First Alert Smoke and Carbon Monoxide...

$26.00 USD

LCD Combination CO Carbon Monoxide Gas Detector Alarm Battery Operated Home

LCD Combination CO Carbon Monoxide...

$10.59 USD

LCD Combination CO Carbon Monoxide...

$10.59 USD

AirThings - Corentium Digital Radon Monitor - Portable -Battery Operated.

AirThings - Corentium Digital Radon...

$99.00 USD

AirThings - Corentium Digital Radon...

$99.00 USD

2in1 Co And Smoke Detector w/ LED Display Carbon Monoxide And Smoke Dual Sensor

2in1 Co And Smoke Detector w/ LED...

$17.99 USD

2in1 Co And Smoke Detector w/ LED...

$17.99 USD

Tuya Wifi Smoke Detector Sensor 90DB Alarm Fire Smart Smoke Detector NEW 2022

Tuya Wifi Smoke Detector Sensor 90DB...

$17.99 USD

Tuya Wifi Smoke Detector Sensor 90DB...

$17.99 USD

2in1 Co And Smoke Detector w/ LED Display Carbon Monoxide And Smoke Dual Sensor

2in1 Co And Smoke Detector w/ LED...

$17.99 USD

2in1 Co And Smoke Detector w/ LED...

$17.99 USD

Kidde Carbon Monoxide Detector Alarm Battery Operated Model #KN-COB-LP2 9CO5-LP2

Kidde Carbon Monoxide Detector Alarm...

$24.99 USD

Kidde Carbon Monoxide Detector Alarm...

$24.99 USD

Tuya Smart WiFi Alarm Smoke & Carbon Monoxide Composite Home Fire Detector 2022

Tuya Smart WiFi Alarm Smoke & Carbon...

$24.99 USD

Tuya Smart WiFi Alarm Smoke & Carbon...

$24.99 USD

LCD Combination CO Carbon Monoxide Gas Detector Alarm Battery Operated Security

LCD Combination CO Carbon Monoxide...

$12.49 USD

LCD Combination CO Carbon Monoxide...

$12.49 USD

Code One Battery Operated Smoke Detector With Ionization Sensor (6-Pack)

Code One Battery Operated Smoke...

$32.84 USD

Code One Battery Operated Smoke...

$32.84 USD

Kidde Fire Sentry Small Smoke Detector Alarm Runs on 9 Volt Battery from Gitway

Kidde Fire Sentry Small Smoke...

$11.89 USD

Kidde Fire Sentry Small Smoke...

$11.89 USD

First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power Authentic

First Alert SC9120B Combination...

$32.00 USD

First Alert SC9120B Combination...

$32.00 USD

First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power Authentic

First Alert SC9120B Combination...

$32.00 USD

First Alert SC9120B Combination...

$32.00 USD

BRK First Alert Hardwired Interconnected Smoke + CO Alarm Voice Model #SC7010BV

BRK First Alert Hardwired...

$32.00 USD

BRK First Alert Hardwired...

$32.00 USD

Kidde Smoke Alarm Detector 10-Year Battery Ionization Sensor (3-pack)

Kidde Smoke Alarm Detector 10-Year...

$31.00 USD

Kidde Smoke Alarm Detector 10-Year...

$31.00 USD

First Alert SCO2B CARBON MONOXIDE & SMOKE ALARM COMBO DETECTOR, Battery Powered

First Alert SCO2B CARBON MONOXIDE &...

$27.99 USD

First Alert SCO2B CARBON MONOXIDE &...

$27.99 USD

First Alert SCO2B CARBON MONOXIDE & SMOKE ALARM COMBO DETECTOR, Battery Powered

First Alert SCO2B CARBON MONOXIDE &...

$27.99 USD

First Alert SCO2B CARBON MONOXIDE &...

$27.99 USD

i12060 KIDDE SMOKE ALARM NEWLY MANUFACTURED! FROM THE FACTORY!

i12060 KIDDE SMOKE ALARM NEWLY...

$14.95 USD

i12060 KIDDE SMOKE ALARM NEWLY...

$14.95 USD

2 PACK IONIZATION SMOKE DETECTOR Battery Operated Home Fire Alarm Safety Sensor

2 PACK IONIZATION SMOKE DETECTOR...

$17.97 USD

2 PACK IONIZATION SMOKE DETECTOR...

$17.97 USD

New! KIDDE FIREX i4618 21007581 IONIZATION SMOKE ALARM DETECTOR Hardwired w/Bat

New! KIDDE FIREX i4618 21007581...

$15.75 USD

New! KIDDE FIREX i4618 21007581...

$15.75 USD

First Alert Hardwired Ionization Smoke Alarm with Battery Backup - White...

First Alert Hardwired Ionization...

$20.00 USD

First Alert Hardwired Ionization...

$20.00 USD

Carbon Monoxide Detector Alarm Battery Operated with LCD and Batteries

Carbon Monoxide Detector Alarm...

$10.49 USD

Carbon Monoxide Detector Alarm...

$10.49 USD

Code One Battery Operated Smoke Detector With Ionization Sensor "6 Pack"

Code One Battery Operated Smoke...

$33.99 USD

Code One Battery Operated Smoke...

$33.99 USD

Kidde P4010ACSCOAQ-WF Hardwired Smoke + Carbon Monoxide Alarm w/Air Qual Monitor

Kidde P4010ACSCOAQ-WF Hardwired Smoke...

$44.99 USD

Kidde P4010ACSCOAQ-WF Hardwired Smoke...

$44.99 USD

MTI Industry 35-742-BL Safe-T-Alert Carbon Monoxide Propane Leak Detector

MTI Industry 35-742-BL Safe-T-Alert...

$76.99

MTI Industry 35-742-BL Safe-T-Alert...

$76.99

First Alert BRK 9120B (4 pack) AC Powered Smoke Detector Alarm w/Battery Backup

First Alert BRK 9120B (4 pack) AC...

$59.99 USD

First Alert BRK 9120B (4 pack) AC...

$59.99 USD

First Alert Onelink 1042136 Smart Smoke and Carbon Monoxide Alarm

First Alert Onelink 1042136 Smart...

$59.99 USD

First Alert Onelink 1042136 Smart...

$59.99 USD

Kidde Code One Smoke Carbon Monoxide Combination Detector Voice Warning Battery

Kidde Code One Smoke Carbon Monoxide...

$24.95 USD

Kidde Code One Smoke Carbon Monoxide...

$24.95 USD

2 Kidde P4010ACSCOAQ-WF Hardwired Smoke + Carb Monoxide Alarm w/Air Qual Monitor

2 Kidde P4010ACSCOAQ-WF Hardwired...

$79.99 USD

2 Kidde P4010ACSCOAQ-WF Hardwired...

$79.99 USD

Sealed! First Alert 3-In-1 Plug-In Explosive Gas & Carbon Monoxide Alarm 1039760

Sealed! First Alert 3-In-1 Plug-In...

$32.90 USD

Sealed! First Alert 3-In-1 Plug-In...

$32.90 USD

Kidde Smoke Detector Battery Powered Ionization Sensor Smoke Alarm (6-Pack)

Kidde Smoke Detector Battery Powered...

$34.97 USD

Kidde Smoke Detector Battery Powered...

$34.97 USD

Tuya Wifi Smoke Detector Sensor 90DB Alarm Fire Smart Smoke Detector Big Discoun

Tuya Wifi Smoke Detector Sensor 90DB...

$17.98 USD

Tuya Wifi Smoke Detector Sensor 90DB...

$17.98 USD

AirThings Wave Mini Air Quality Monitor - Bluetooth - Model 2920 - NEW - J274

AirThings Wave Mini Air Quality...

$37.99 USD

AirThings Wave Mini Air Quality...

$37.99 USD

Kidde i4618AC Firex Hardwire Smoke Detector With Battery Backup

Kidde i4618AC Firex Hardwire Smoke...

$12.90 USD

Kidde i4618AC Firex Hardwire Smoke...

$12.90 USD

Kidde Code One Smoke Detector Battery Powered with Ionization Sensor Smoke Alarm

Kidde Code One Smoke Detector Battery...

$8.99 USD

Kidde Code One Smoke Detector Battery...

$8.99 USD

2GIG CO3-345 Carbon Monoxide Detector (read)

2GIG CO3-345 Carbon Monoxide Detector...

$29.00 USD

2GIG CO3-345 Carbon Monoxide Detector...

$29.00 USD

USI Electric USI-1204 Hardwired Ionization Smoke & Fire Alarm w/Backup Battery

USI Electric USI-1204 Hardwired...

$24.90 USD

USI Electric USI-1204 Hardwired...

$24.90 USD

Kidde Smoke Detector Ionization Sensor Smoke Alarm (6-Pack)

Kidde Smoke Detector Ionization...

$28.45 USD

Kidde Smoke Detector Ionization...

$28.45 USD

6pcs Siterwell Smoke Detector Alarm 10 Year Battery include Tester Photoelectric

6pcs Siterwell Smoke Detector Alarm...

$54.89 USD

6pcs Siterwell Smoke Detector Alarm...

$54.89 USD

First Alert 9120B Smoke Detector & Alarm, AC Powered

First Alert 9120B Smoke Detector &...

$13.00 USD

First Alert 9120B Smoke Detector &...

$13.00 USD

Dometic Kidde KN-COPP-B-LPM Carbon Monoxide Alarm - w/ Screen - Battery Powered

Dometic Kidde KN-COPP-B-LPM Carbon...

$15.99 USD

Dometic Kidde KN-COPP-B-LPM Carbon...

$15.99 USD

SITERWELL 2.4G WiFi Smoke Detector Carbon Monoxide Detector Combo Voice Alert

SITERWELL 2.4G WiFi Smoke Detector...

$83.99 USD

SITERWELL 2.4G WiFi Smoke Detector...

$83.99 USD

5 LOT ADEMCO HONEYWELL 5808W3 WIRELESS SMOKE & HEAT DETECTOR WITH SOUND *NEW*

5 LOT ADEMCO HONEYWELL 5808W3...

$395.00 USD

5 LOT ADEMCO HONEYWELL 5808W3...

$395.00 USD

Pro Lab Radon Gas Test Kit

Pro Lab Radon Gas Test Kit

$13.95 USD

Pro Lab Radon Gas Test Kit

$13.95 USD

Airthings - Wave Plus Smart Indoor Air Quality Monitor with Radon Detection ...

Airthings - Wave Plus Smart Indoor...

$229.99 USD

Airthings - Wave Plus Smart Indoor...

$229.99 USD

First Alert SC9120B Combination Carbon Monoxide & Smoke Alarm AC Power Authentic

First Alert SC9120B Combination...

$33.26 USD

First Alert SC9120B Combination...

$33.26 USD

Code One Battery Operated Smoke Detector With Ionization Sensor (6-Pack)

Code One Battery Operated Smoke...

$32.70 USD

Code One Battery Operated Smoke...

$32.70 USD

New USI 3-in-1 MIC1509S Universal Smoke, Fire & CO 10yr battery mfg 2021

New USI 3-in-1 MIC1509S Universal...

$34.80 USD

New USI 3-in-1 MIC1509S Universal...

$34.80 USD

Brand New Carbon Monoxide Detector...

$6.49 USD

Brand New Carbon Monoxide Detector...

$6.49 USD

Kidde Smoke and Carbon Monoxide Detector, Hardwired with Smart Features & Voice

Kidde Smoke and Carbon Monoxide...

$55.00 USD

Kidde Smoke and Carbon Monoxide...

$55.00 USD

Kidde 10-year Smoke + Carbon Monoxide Combo Value Pack P3010K-CO 2 Pc Package

Kidde 10-year Smoke + Carbon Monoxide...

$60.00 USD

Kidde 10-year Smoke + Carbon Monoxide...

$60.00 USD

KIDDE FireX Smoke & Carbon Monoxide...

$29.99 USD

KIDDE FireX Smoke & Carbon Monoxide...

$29.99 USD

Google Nest Protect Carbon Monoxide Smoke Detector - S3003LWES

Google Nest Protect Carbon Monoxide...

$75.00 USD

Google Nest Protect Carbon Monoxide...

$75.00 USD