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Best selling products: Best
First Alert Home Carbon Monoxide Detectors Detectors
Bestselling
Top Rated
1
Rank 1
Google Nest Protect Smoke and Carbon Monoxide Alarm 2nd Gen - S3000BWES
(406)
$149.00 New
$149.00 New
$39.99 Used
$39.99 Used
2
Rank 2
Google Nest Protect Carbon Monoxide Smoke Detector - S3003LWES
(204)
$16.00 New
$16.00 New
$14.54 Used
$14.54 Used
3
Rank 3
BRK First Alert 9120B Smoke Detector
(569)
$17.00 New
$17.00 New
$15.25 Used
$15.25 Used
4
Rank 4
Kidde 10 Year Sealed-In Battery-Powered Ionization Smoke Alarm
(7)
$16.99 New
$16.99 New
---- Used
No used products available
5
Rank 5
Kidde i4618 Firex Hardwired Smoke Alarm
(2)
$24.99 New
$24.99 New
---- Used
No used products available
6
Rank 6
Kidde 21007581 Hardwired Smoke Alarm with Battery Backup
(220)
$27.95 New
$27.95 New
$18.99 Used
$18.99 Used
7
Rank 7
Kidde Smart Smoke Carbon Monoxide Alarm Detector - P4010ACSCOAQWF
(7)
$39.95 New
$39.95 New
---- Used
No used products available
8
Rank 8
Kidde 21006378 Hardwire Smoke Alarm Detector
(124)
$29.00 New
$29.00 New
---- Used
No used products available
9
Rank 9
Kidde i9010 Smoke Alarm
(11)
$14.99 New
$14.99 New
---- Used
No used products available
10
Rank 10
Kidde 21007588 120V AC wire-in Hush Smoke Alarm with Battery Backup - 4 Pack
(42)
$65.00 New
$65.00 New
$29.99 Used
$29.99 Used
11
Rank 11
Airthings 2951 Wave Radon Battery Operated Smart Radon Detector
(3)
$34.99 New
$34.99 New
---- Used
No used products available
12
Rank 12
Kidde Detect Smoke Alarm -2 Pack - Model 20SD10 - 10-Year Battery
$30.36 New
$30.36 New
---- Used
No used products available
13
Rank 13
Google Nest Temperature Sensor - White (T5000SF)
(84)
$18.49 New
$18.49 New
---- Used
No used products available
14
Rank 14
Honeywell 5800SMOKEV Wireless Smoke Heat Detecto Factory / w Battery
(2)
$55.00 New
$55.00 New
$45.95 Used
$45.95 Used
15
Rank 15
BRK SC9120B Smoke & Carbon Monoxide Detector
(24)
$52.00 New
$52.00 New
$28.99 Used
$28.99 Used
16
Rank 16
First Alert BRK SMICO105-AC Smoke/Carbon Mono Alarm Pack of 6 Pieces
(4)
$54.95 New
$54.95 New
---- Used
No used products available
17
Rank 17
5 five Kidde 30cua10 Smoke And Carbon All
$35.94 New
$35.94 New
---- Used
No used products available
18
Rank 18
Digital Radon Detector Airthings 2350
(99)
$45.00 New
$45.00 New
$43.99 Used
$43.99 Used
19
Rank 19
First Alert 9120B6CP Smoke Alarm - 6 Pack
(38)
$89.26 New
$89.26 New
$12.34 Used
$12.34 Used
20
Rank 20
Kidde P4010ACSCO-WF Smoke + Carbon Monoxide Smart Alarm
(1)
$35.99 New
$35.99 New
---- Used
No used products available
21
Rank 21
Kidde 30CUAR-V Smoke Carbon Monoxide Detector Alarm Hardwire Battery
$42.99 New
$42.99 New
---- Used
No used products available
22
Rank 22
Kidde 21006377 Hardwired Combination Carbon Monoxide & Smoke Alarm
(181)
$119.00 New
$119.00 New
$19.99 Used
$19.99 Used
23
Rank 23
First Alert CO710 Carbon Monoxide Detector with Digital Temperature Display (1039753)
(10)
$24.99 New
$24.99 New
$9.00 Used
$9.00 Used
24
Rank 24
First Alert Smoke Detector - White
(19)
$21.95 New
$21.95 New
$13.45 Used
$13.45 Used
25
Rank 25
Kidde KN-COEG-3 Explosive Gas Alarm Carbon Monoxide Alarm Detector with Battery
(111)
$33.90 New
$33.90 New
$21.99 Used
$21.99 Used
26
Rank 26
Kidde P4010ACSAQ-WF Indoor Smoke Alarm - White
(3)
$19.99 New
$19.99 New
---- Used
No used products available
27
Rank 27
Kidde KN-COP-DP-10YL-AQ-WF Carbon Monoxide Alarm w/ Indoor Air Quality Monitor
(3)
$26.95 New
$26.95 New
$17.99 Used
$17.99 Used
28
Rank 28
Ring 4SS1S8-0EN0 Alarm Smoke & CO Listener
(16)
$22.99 New
$22.99 New
$17.99 Used
$17.99 Used
29
Rank 29
Kidde 21026056 Model i9040 Ionization Smoke Alarm
(185)
$18.11 New
$18.11 New
$13.50 Used
$13.50 Used
30
Rank 30
Kidde 21028744 Smoke Alarm - i9010
(43)
$18.99 New
$18.99 New
$9.95 Used
$9.95 Used
31
Rank 31
Kidde 201025759 120V Tamper Resistant Plug-In Carbon Monoxide Detector
(56)
$18.97 New
$18.97 New
$9.75 Used
$9.75 Used
32
Rank 32
First Alert Z-Wave Smoke & Carbon Monoxide Detector Works with Ring
(31)
$24.99 New
$24.99 New
$17.86 Used
$17.86 Used
33
Rank 33
Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery
(33)
$26.99 New
$26.99 New
$24.99 Used
$24.99 Used
34
Rank 34
Kidde 21029886 Firex Smoke Detector Hardwired with Battery Backup Front Load D
(21)
$19.99 New
$19.99 New
---- Used
No used products available
35
Rank 35
Google Nest 2nd Gen Protect Smoke and Carbon Monoxide Alarm Detector with Battery - White
(39)
$145.00 New
$145.00 New
$25.00 Used
$25.00 Used
36
Rank 36
System Sensor CO1224T Carbon Monoxide Detector
(7)
$69.99 New
$69.99 New
$20.00 Used
$20.00 Used
37
Rank 37
Airthings Wave Mini Smart Indoor Quality Monitor Model 2928
(10)
$17.95 New
$17.95 New
---- Used
No used products available
38
Rank 38
Airthings 223 Corentium Home Radon Detector
(191)
$69.99 New
$69.99 New
$44.99 Used
$44.99 Used
39
Rank 39
Airthings 2928 Wave Mini Battery Operated Smart Indoor Air Quality Monitor
(1)
$19.50 New
$19.50 New
$16.55 Used
$16.55 Used
40
Rank 40
Kidde KN-COSM-BA Battery Operated Combination Smoke and Carbon Monoxide Alarm - White
(30)
$69.99 New
$69.99 New
---- Used
No used products available
41
Rank 41
X-SENSE 3pack Combination Smoke and Carbon Monoxide Alarm - 10 YR Batt Life SC07
(6)
$33.00 New
$33.00 New
---- Used
No used products available
42
Rank 42
Kidde Firex Battery Operated Smoke and Carbon Monoxide Detector - White
(39)
$37.99 New
$37.99 New
---- Used
No used products available
43
Rank 43
2 Kidde Detect Smoke Carbon Monoxide Alarm 30CUA10
(3)
$49.99 New
$49.99 New
$22.99 Used
$22.99 Used
44
Rank 44
Kidde 900007601 Nighthawk Carbon Monoxide Alarm with Digital Display - White
(186)
$24.99 New
$24.99 New
$15.50 Used
$15.50 Used
45
Rank 45
Kidde FireX KN-COPE-IC Smoke & Carbon Monoxide Alarm 21007624 Photoelectric
(51)
$33.05 New
$33.05 New
$24.99 Used
$24.99 Used
46
Rank 46
Kidde Hardwired Smart Smoke Detector with Battery Back-up 85 decibel alarm &
(1)
$18.95 New
$18.95 New
---- Used
No used products available
47
Rank 47
First Alert CO400 Carbon Monoxide Alarm Detector
(173)
$16.95 New
$16.95 New
$6.99 Used
$6.99 Used
48
Rank 48
Kidde - 21033081 - SMACFEX - Smoke Alarm with Battery Backup - Hardwired
$28.00 New
$28.00 New
---- Used
No used products available
49
Rank 49
Kidde Smoke Carbon Monoxide Detector Wire- Interconnect 900-0225
(3)
$39.99 New
$39.99 New
---- Used
No used products available
50
Rank 50
Kidde 30CUAR DETECT Smoke Carbon Monoxide Open Box
$39.95 New
$39.95 New
---- Used
No used products available
51
Rank 51
Kidde 900-CUAR Smoke & Carbon Monoxide Detector Alarm - 21032250
(8)
$39.99 New
$39.99 New
$28.95 Used
$28.95 Used
52
Rank 52
Kidde Smoke and Carbon Monoxide Detector (P4010ACSCO-W)
(4)
$49.95 New
$49.95 New
$20.99 Used
$20.99 Used
53
Rank 53
KIDDE 30CUDR-V COMBO SMOKE CO ALARM AA BATTERY POWERED WITH VOICE ALERTS
$28.99 New
$28.99 New
---- Used
No used products available
54
Rank 54
Kidde 4-Pack 20SAR Hardwired Interconnected Photoelectric Senor Smoke Detector
$89.00 New
$89.00 New
---- Used
No used products available
55
Rank 55
Honeywell Farenhyt Series Black 15-32 VDC Intelligent Addressable Photoelectric Smoke Detector (IDP-PHOTO-W)
$89.99 New
$89.99 New
$55.00 Used
$55.00 Used
56
Rank 56
Honeywell Resideo Prosixsmokev Sixsmokeva 2-way Wireless Smoke Detector
$64.95 New
$64.95 New
---- Used
No used products available
57
Rank 57
Kidde 21033083 Combo Smoke/CO Alarm 5" Photoelectric Hardwired LED
$39.29 New
$39.29 New
---- Used
No used products available
58
Rank 58
First Alert BRK SC7010BV Talking Photoelectric Smoke and Carbon Monoxide Alarm - White
(50)
$59.99 New
$59.99 New
---- Used
No used products available
59
Rank 59
Kidde Quick Connect Wiring Adapter For Hardwired Smoke & Detector Alarm 20-9003
(2)
$7.66 New
$7.66 New
---- Used
No used products available
60
Rank 60
First Alert CO1210CP1 Carbon Monoxide Alarm - White
(29)
$12.77 New
$12.77 New
---- Used
No used products available
61
Rank 61
Kidde 9CO5-LP2 Battery Powered Carbon Monoxide Alarm
(106)
$13.90 New
$13.90 New
---- Used
No used products available
62
Rank 62
First Alert CO605 Carbon Monoxide Plug-In Alarm with Battery
(32)
$18.49 New
$18.49 New
$12.49 Used
$12.49 Used
63
Rank 63
First Alert C0400 Carbon Monoxide Alarm - White
(39)
$14.99 New
$14.99 New
$9.99 Used
$9.99 Used
64
Rank 64
Kidde 120v Hardwire Smoke Detector Battery Backup Voice Alarm P4010acs
(3)
$19.99 New
$19.99 New
$14.99 Used
$14.99 Used
65
Rank 65
Honeywell Resideo 5800COV Carbon Monoxide CO Detector Replaced 5800CO
$76.00 New
$76.00 New
$40.00 Used
$40.00 Used
66
Rank 66
BRK SMI105-AC First Alert AC Powered Hardwire Smoke Alarm 1046850
$23.99 New
$23.99 New
---- Used
No used products available
67
Rank 67
Kidde Carbon Monoxide Alarm 120v Direct Wire W Battery Backup 900-0120 B24
(15)
$46.87 New
$46.87 New
$25.00 Used
$25.00 Used
68
Rank 68
Kidde 30CUA10-V Smoke & Carbon Monoxide Detector
$69.98 New
$69.98 New
---- Used
No used products available
69
Rank 69
First Alert Wireless Smoke & Carbon Monoxide Alarm White (FAT1039839)
(25)
$34.94 New
$34.94 New
$19.49 Used
$19.49 Used
70
Rank 70
Kidde C3010 Lithium Battery Powered Carbon Monoxide Alarm (21010073)
(1)
$23.99 New
$23.99 New
---- Used
No used products available
71
Rank 71
First Alert 1042409 Photoelectric Smoke Detector - 2 Pack
(11)
$19.99 New
$19.99 New
---- Used
No used products available
72
Rank 72
BRK SMI100-AC Interconnectable Ion Smoke Alarm w/Battery Backup 1046836 9120B
(1)
$17.99 New
$17.99 New
---- Used
No used products available
73
Rank 73
Kidde P12040 Interconnect Photoelectric Smoke Alarm - 21006371
(23)
$34.97 New
$34.97 New
---- Used
No used products available
74
Rank 74
First Alert BRK SC9120B-6 Hardwired Alarm Smoke Detector Pack of 6
$12.50 New
$12.50 New
---- Used
No used products available
75
Rank 75
Kidde i12010S Worry- Hardwired Smoke Alarm 10 Year Life Battery Backup 120V
(40)
$37.99 New
$37.99 New
---- Used
No used products available
76
Rank 76
Kidde Code One Combo Alarm Smoke Wired White 21032251 900-CUAR
$125.00 New
$125.00 New
$31.99 Used
$31.99 Used
77
Rank 77
Kidde Bedroom Smoke Alarm 0916LLN Battery Operated
(4)
$23.00 New
$23.00 New
$18.00 Used
$18.00 Used
78
Rank 78
First Alert Plug-in Carbon Monoxide Alarm Fat1039730
(2)
$11.99 New
$11.99 New
---- Used
No used products available
79
Rank 79
Kidde Detect Smoke Alarm Model 20SD10 - Open Box
$14.96 New
$14.96 New
---- Used
No used products available
80
Rank 80
Universal Security Instruments 5304 Smoke Alarm
(23)
$50.00 New
$50.00 New
---- Used
No used products available
81
Rank 81
First Alert RD1 Radon Gas Test Kit for Home
(57)
$14.99 New
$14.99 New
---- Used
No used products available
82
Rank 82
X-Sense SC07 Combination Smoke And Carbon Monoxide Alarm
(5)
$24.99 New
$24.99 New
---- Used
No used products available
83
Rank 83
Kidde FireX 21033086 Combo Smoke Carbon Monoxide Alarm Voice Alert CUAC10YFEX-V
$72.98 New
$72.98 New
---- Used
No used products available
84
Rank 84
BRK 1046858 FirstAlert Ionization Smoke Alarm with Lithium Battery (SMI110)
$17.99 New
$17.99 New
---- Used
No used products available
85
Rank 85
Kidde Carbon Monoxide Alarm Kn-cob-dp-h 900-0107 Plug in Detector 85db
(4)
$21.99 New
$21.99 New
---- Used
No used products available
86
Rank 86
Kidde i12040 Ionization Smoke Detector with Battery Backup - Pack of 6
(157)
$56.66 New
$56.66 New
---- Used
No used products available
87
Rank 87
Kidde P4010ACSCO AC Hardwired Combination 1 Carbon Monoxide & Photoelectric
(8)
$47.45 New
$47.45 New
---- Used
No used products available
88
Rank 88
BRK Brands CO5120BN Hardwire Carbon Monoxide Alarm With Battery Backup
(17)
$39.49 New
$39.49 New
---- Used
No used products available
89
Rank 89
Kidde 21028461 Smoke Alarm Adapters ()
$27.99 New
$27.99 New
---- Used
No used products available
90
Rank 90
LIFESAVER Kidde Plug in Carbon Monoxide Alarm Battery Backup
(5)
$19.89 New
$19.89 New
---- Used
No used products available
