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First Alert Brk Battery-operated Heat Detection Smoke Detector

$ 17.6 $ 10.56

2PC CO Carbon Monoxide Detector Fire Security Sensor Voice Alert Loud Alarm Home

$ 14.95 $ 8.97

FIRST ALERT - Smoke & Fire Alarm - Maximum Protection - SA710CN- NEW in Package

$ 8.79 $ 5.27

Kidde AC Plug-in Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk...

$ 55.43 $ 33.25

6 PACK First Alert BRK Heat Alarm Hardwired With Battery Backup 120-V - HD6135FB

$ 105.58 $ 63.34

Aire Libre Uno Indoor Air Quality Monitor New Open Box

$ 8.8 $ 5.28

Kidde Carbon Monoxide Alarm Nighthawk Battery Operated Model KN-COP-B NEW🆓🚢

$ 26.39 $ 15.83

KIDDE 120V AC Low Profile Smoke Alarm Flush Mount Model KN-SMFM-i - NEW

$ 197.56 $ 118.53

Kidde 21006377-N Kn-Cosm-Iba Smoke And Co Combination Alarm With 2 Aa Alkaline

$ 49.88 $ 29.93

Knox Safety Carbon Monoxide Detector, 10-Year Never Replace Battery

$ 24.86 $ 14.91

Kidde KN-COPE-IC Combination Photoelectric Smoke And Carbon Monoxide Alarm Used

$ 70.39 $ 42.23

Detector De Monoxido De Carbono Enchufable A Prueba De Manipulaciones Alarma

$ 42.07 $ 25.24

Travel Size Carbon Monoxide Detector Plug In Unit

$ 35.15 $ 21.09

HONEYWELL 5808W3 PHOTOELECTRIC WIRELESS SMOKE HEAT DETECTOR NEW

$ 57.2 $ 34.32

Qolsys IQ Smoke Wireless Photoelectric Smoke Detector Wall/ Ceiling QS5110-840

$ 66 $ 39.6

First Alert Brk Hardwired Photoelectric Sensor Smoke Detector

$ 17.6 $ 10.56

LOT OF 6: BRK First Alert 7020BSL Smoke and Strobe LED Combo Alarm 120V

$ 440 $ 264

First Alert BRK SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with x3

$ 120.55 $ 72.33

First Alert, BRK SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm 8 pack

$ 272.8 $ 163.68

Kidde P4010LACS-W White Photoelectric Smoke Alarm With Voice Pack Of 2 Used

$ 70.39 $ 42.23

First Alert 2 in 1 Smoke & Carbon Monoside Alarm - Z Wave Plus - Works with Ring

$ 28.16 $ 16.89

Kiddee Carbon Monoxide Alarm KN-COB-DP2 Open Box

$ 14.48 $ 8.69

Code One Battery Operated Smoke Detector With Ionization Sensor (pack of 6)

$ 28.51 $ 17.1

First Alert Smoke & Carbon Monoxide Alarm NEW IN BOX 2in 1!

$ 16.72 $ 10.03

First Alert Hardwired Smoke Alarm, 6-pack 9120B6CP

$ 83.41 $ 50.04

Smoke and Fire Alarm First Alert Battery Powered SA710CN

$ 7.92 $ 4.75

Onelink Smoke Detector and Carbon Monoxide Detector Battery Powered

$ 97.68 $ 58.6

CO Detector  inexpensive, reliable CO Detector, No batteries required,

$ 3.38 $ 2.03

Interlogix - SLX-AD-T3 FireFighter - Wireless Fire Alarm Monitoring / Relay

$ 14.07 $ 8.44

BRK Wireless Interconnect Battery CO Alarm - CO511B

$ 23.23 $ 13.93

First Alert Smoke Alarm Pack Model 83R - Tested & Confirmed Working

$ 3.95 $ 2.37

First Alert Z-Wave 2in1 Smoke Carbon Monoxide Combo Alarm ZCOMBO Ring Alarm

$ 22 $ 13.2

New Nest Temperature Smart Sensor For Google Nest Thermostats T5000SF🌡

$ 24.63 $ 14.77

X-Sense SD2K0AX 10 Year Battery LED Indicator Smoke Detector With Silence Button

$ 35.64 $ 21.38

Interlogix 260-CO SafeAir Carbon Monoxide Detector ~!~ NEW ~!~

$ 70.39 $ 42.23

NIB Onelink Wi-Fi Smoke + Carbon Monoxide Alarm, Hardwired, Apple HomeKit

$ 52.78 $ 31.66

Lot of 6 Kidde i9070 Front Load 9V Battery Operated Ionization Smoke Alarm New

$ 51.92 $ 31.15

FireAvert 3.0 Auto Gas Stove Shutoff-Fire Smoke Alarm Activated-#FA-G03-05-15

$ 31.68 $ 19

System Sensor CO1224T Carbon Monoxide Detector 4-wire 12/24 volt 85db sounder

$ 57.2 $ 34.32

New Kidde 10 Year Worry-Free Plug-In Carbon Monoxide Detector w/ Battery Backup

$ 17.59 $ 10.55

2 Wire I4 CO/Smoke Detector, 8.5 to 35 VDC, System Sensor #COSMO-2W

$ 133.32 $ 79.99

Nest S3004PWBUS Nest Protect Long-Life Battery (White) **Open Box Item**

$ 101.19 $ 60.71

KIDDE CODE ONE SMOKE ALARM 10 YEAR MODEL i9010 ITEM # 21009992 NEW

$ 13.19 $ 7.91

FIRST ALERT 1039852 SMOKE ALARM NEW

$ 8.8 $ 5.28

4 packs kidde i4618 Firex Hardwired Smoke Alarm, NEWLY MANUFACTURED!

$ 44.88 $ 26.92

Nest Protect Wired Model 06C - October 2026

$ 39.6 $ 23.76

New!! FIRST ALERT Battery Ionization Smoke Alarm 1039796

$ 7.03 $ 4.21

Nest Protect Smoke and Carbon Monoxide Alarm (2nd Gen) S3000BWES New/ Sealed

$ 95.92 $ 57.55

Kidde Hardwire With Battery Backup Photoelectric Smoke Alarm P12040

$ 17.59 $ 10.55

First Alert BRK Carbon Monoxide Battery Powered Alarm CO400B 6-Pack OPEN BOX

$ 35.2 $ 21.12

First Alert Smoke Alarm (SA87C)

$ 14.95 $ 8.97

Corentium Home Radon Detector by Airthings Digital LCD Display Portable Safety

$ 148.72 $ 89.23

First Alert Smoke Alarm Long Life Lithium Battery 1044089 Duo Pack New

$ 21.95 $ 13.17

New Kidde Smoke & Carbon Monoxide Detector, Hardwired

$ 26.4 $ 15.83

Whisker Labs Ting Smart Electrical Fire Detector Model WL-T-3000-R06 MINT

$ 15.83 $ 9.49

Portable "Pocket" Gas Detector from Nova Products New in package

$ 21.91 $ 13.14

Nest Temperature Sensor

$ 34.31 $ 20.58

Smoke Alarm Mudder Easy Installation Brand New

$ 10.56 $ 6.33

New Open Box BRK Battery Powered Photoelectric Smoke Alarm PR700B

$ 4.74 $ 2.84

KIDDIE i9050 SMOKE ALARM-Sealed Box 10 Year Battery Included.

$ 12.76 $ 7.65

First Alert Hardwired Smoke & Carbon Monoxide Detector with Voice Location

$ 28.6 $ 17.16

RF-SM-DC Kidde Smoke Detector, Battery Powered, Interconnect Smoke Alarm

$ 56.32 $ 33.79

Kidde Worry-Free Smoke Alarm 120V Hardwired

$ 17.58 $ 10.54

NEW FIRST ALERT 1044807 Z WAVE PLUS 2 IN 1 SMOKE AND CO ALARM WORKS WITH RING

$ 32.55 $ 19.53

Kidde Fire Sentry i9040E Smoke Alarm Detector - 025417091458

$ 17.59 $ 10.55

CO/Smoke Alarm LCD Display White

$ 5.53 $ 3.32

First Alert 2-in-1 Smoke and Carbon Monoxide Alarm 2-Pack PC1210-NEW Damaged Box

$ 21.99 $ 13.19

First Alert Smoke Alarm Slim Profile Design Model P1210 - 10 Year Battery

$ 16.72 $ 10.03

6 PCS Bundle Carbon Monoxide Detector CO Gas Detection Alarm LCD Digital Display

$ 40.47 $ 24.28

First Alert Smoke Alarm Hardwire Adapter Included

$ 16.71 $ 10.02

KIDDE Code One i9070 Battery Operated Smoke Alarm Front Load Battery New 07/2021

$ 8.75 $ 5.25

Kidde P3010CU Smoke and Carbon Monoxide Combination Detector - White, 2 Pack

$ 30.8 $ 18.48

Kidde Firex Combo Smoke & Carbon Monoxide Voice Alarms, 2 Pack Model KN-COPE-IC

$ 35.15 $ 21.09

KIDDE i5000 Firex 120V AC Wire-in Smoke Alarm NEWLY MANUFACTURED!

$ 16.63 $ 9.97

Hardwired Combination Carbon Monoxide & Photoelectric Smoke Alarm KN-COPE-IC

$ 43.12 $ 25.87

Samsung ~ ADT SMARTTHINGS SMOKE ALARM ""ONLY""~ F-ADT-SMK-1 FOR ADT SECURITY

$ 16.71 $ 10.02

Smoke Alarm Fg888d

$ 9.68 $ 5.8

KIDDE i9070 Battery Operated Smoke Alarm Front Load Battery Operated NEW

$ 12.31 $ 7.38

LCD Combination CO Carbon Monoxide Gas Detector Alarm Battery Operated Home

$ 11.43 $ 6.85

Honeywell SIXCOMBO Wireless Smoke/Co2 Detector EXP:APR/2030 -NK0047

$ 60.64 $ 36.38

USI Electric USI-1204 Hardwired Ionization Smoke & Fire Alarms W/Backup Battery

$ 30.75 $ 18.45

Kidde Carbon Monoxide Detector Alarm Model #9CO5-LP2 NEW (FOR 6 NEW UNITS)

$ 96.8 $ 58.08

(5) First Alert Carbon Monoxide Alarm/Detector CO605B BRAND NEW Battery Included

$ 26.4 $ 15.83

Kidde i9010 Smoke Alarm with 10-Year Long Life Sealed Lithium Battery

$ 8 $ 4.8

FIRST ALERT, BRK ELECTRONICS SA350B 10-Year Sealed Lithium Battery, smoke alarm

$ 20.1 $ 12.06

KIDDE HARDWIRED SMOKE AND COMBINATION DETECTOR ALARM ADAPTERS 21028461 NEW (F)

$ 6.11 $ 3.66

ADT Samsung SmartThings Smart Carbon Monoxide Alarm with Alerts White ***

$ 7.03 $ 4.21

First Alert BRK 10-Year Battery AC Hardwired Combo Smoke and CO2 Detector

$ 44 $ 26.4

X-Sense Carbon Monoxide Alarm Detector, Replaceable 1-PACK, White

$ 22 $ 13.2

First Alert BRK PRC710 Smoke and Carbon Monoxide Alarm 1pk

$ 23.49 $ 14.09

Airthings Corentium 223 Home Battery Operated Digital Radon Detector Model QRI

$ 65.98 $ 39.58

NEW Airthings 2950 Smart Radon Detector - White

$ 78.32 $ 46.99

First Alert Carbon Monoxide Alarm Plug-In With Battery Back-Up CO605 brand new

$ 15.84 $ 9.5

Sealed Battery Carbon Monoxide Alarm With Digital Display

$ 129.71 $ 77.82

Lot of 41 GE Interlogix TX-6310-01-1 Wireless Carbon Monoxide Alarm

$ 184 $ 110.4

First Alert, BRK SC9120B Hardwire Combination Smoke&Carbon Monoxide alarm 4 Pack

$ 136.39 $ 81.83

Kidde Night Hawk Carbon Monoxide Alarm Digital Display KN-COPP-B-LP

$ 11.41 $ 6.84

X-Sense COO3D-W Carbon Monoxide Alarm New - damaged box

$ 16.72 $ 10.03

NEW SEALED NOS Vintage 1998 FIREX Smoke Alarm CB 4000

$ 13.19 $ 7.91

Kidde Firex i4618AC 21007581 - Hardwired Ionization Smoke Alarm Detector

$ 10.56 $ 6.33