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Best selling products: Best
Nest Home Carbon Monoxide Detectors Detectors
Bestselling
Top Rated
1
Rank 1
Google Nest Protect Smoke and Carbon Monoxide Alarm 2nd Gen - S3000BWES
(398)
$11.99 New
$11.99 New
---- Used
No used products available
2
Rank 2
BRK SC9120B Smoke & Carbon Monoxide Detector
(19)
$18.85 New
$18.85 New
---- Used
No used products available
3
Rank 3
Google Nest Protect Carbon Monoxide Smoke Detector - S3003LWES
(201)
$16.00 New
$16.00 New
---- Used
No used products available
4
Rank 4
Kidde 30CUAR Detect Smoke Carbon Monoxide Alarm- Hardwired AA Batt 2 PACKS
(1)
$34.79 New
$34.79 New
---- Used
No used products available
5
Rank 5
Airthings Battery Operated Digital Radon Detector- Model 2350
(93)
$69.99 New
$69.99 New
$37.99 Used
$37.99 Used
6
Rank 6
2025 SITERWELL Hardwired Combination Carbon Monoxide & Smoke Alarm Authentic
(1)
$48.99 New
$48.99 New
---- Used
No used products available
7
Rank 7
BRK First Alert 9120B Smoke Detector
(565)
$19.30 New
$19.30 New
$15.00 Used
$15.00 Used
8
Rank 8
4pk Kidde Smoke Carbon Monoxide Alarm 10-Years BATTERY Model 30CUDR
(3)
$47.00 New
$47.00 New
---- Used
No used products available
9
Rank 9
Kidde 900-CUAR-V Smoke & Carbon Monoxide Detector - 21032084
(2)
$89.99 New
$89.99 New
---- Used
No used products available
10
Rank 10
Kidde Detect Smoke Carbon Monoxide Alarm Voice Alerts Hard Wired 10 Year
(2)
$42.98 New
$42.98 New
---- Used
No used products available
11
Rank 11
Airthings 223 Corentium Home Radon Detector
(187)
$68.00 New
$68.00 New
$50.00 Used
$50.00 Used
12
Rank 12
Google Nest Temperature Sensor - White (T5000SF)
(83)
$23.79 New
$23.79 New
$12.50 Used
$12.50 Used
13
Rank 13
Kidde Worry-Free Combination Smoke and Carbon Monoxide Alarm
(38)
$38.00 New
$38.00 New
---- Used
No used products available
14
Rank 14
Kidde P4010ACSCO-WF Smoke + Carbon Monoxide Smart Alarm
(1)
$33.99 New
$33.99 New
---- Used
No used products available
15
Rank 15
Kidde 21007588 120V AC wire-in Hush Smoke Alarm with Battery Backup - 4 Pack
(40)
$59.99 New
$59.99 New
---- Used
No used products available
16
Rank 16
Kidde i9010 Smoke Alarm
(7)
$19.99 New
$19.99 New
$7.50 Used
$7.50 Used
17
Rank 17
First Alert 9120B6CP Smoke Alarm - 6 Pack
(38)
$92.99 New
$92.99 New
---- Used
No used products available
18
Rank 18
Kidde 21007581 Hardwired Smoke Alarm with Battery Backup
(216)
$24.95 New
$24.95 New
$10.00 Used
$10.00 Used
19
Rank 19
Honeywell 5800SMOKEV Wireless Smoke Heat Detecto Factory / w Battery
(2)
$55.00 New
$55.00 New
$40.42 Used
$40.42 Used
20
Rank 20
Kidde 900-CUAR Smoke & Carbon Monoxide Detector Alarm - 21032250
(7)
$44.99 New
$44.99 New
---- Used
No used products available
21
Rank 21
Kidde 21006377 Hardwired Combination Carbon Monoxide & Smoke Alarm
(181)
$105.50 New
$105.50 New
$69.95 Used
$69.95 Used
22
Rank 22
Kidde 21006378 Hardwire Smoke Alarm Detector
(123)
$37.80 New
$37.80 New
---- Used
No used products available
23
Rank 23
Kidde 900007601 Nighthawk Carbon Monoxide Alarm with Digital Display - White
(183)
$29.99 New
$29.99 New
$14.99 Used
$14.99 Used
24
Rank 24
First Alert Z-Wave Smoke & Carbon Monoxide Detector Works with Ring
(31)
$35.95 New
$35.95 New
$17.86 Used
$17.86 Used
25
Rank 25
Kidde Detect Smoke Carbon Monoxide Alarm 10-Year Life 30CUD10-V
$19.00 New
$19.00 New
---- Used
No used products available
26
Rank 26
6 Pack Kidde 21033083 CUACFEX Smoke And Carbon Monoxide Alarm
$45.00 New
$45.00 New
---- Used
No used products available
27
Rank 27
First Alert SC9120B Smoke and Carbon Monoxide Detector
(329)
$58.99 New
$58.99 New
$30.00 Used
$30.00 Used
28
Rank 28
Kidde Smart Smoke Carbon Monoxide Alarm Detector - P4010ACSCOAQWF
(6)
$35.00 New
$35.00 New
$29.91 Used
$29.91 Used
29
Rank 29
First Alert BRK SMICO105-AC Smoke/Carbon Mono Alarm Pack of 6 Pieces
(4)
$210.00 New
$210.00 New
---- Used
No used products available
30
Rank 30
First Alert PR710 Photoelectric Smoke Alarm - White (1039852)
(9)
$13.56 New
$13.56 New
---- Used
No used products available
31
Rank 31
Kidde 201025759 120V Tamper Resistant Plug-In Carbon Monoxide Detector
(53)
$20.00 New
$20.00 New
$9.75 Used
$9.75 Used
32
Rank 32
X-Sense Combination SC07 3-pack Smoke and Carbon Monoxide Alarm
(5)
$25.99 New
$25.99 New
---- Used
No used products available
33
Rank 33
Kidde FireX KN-COPE-IC Smoke & Carbon Monoxide Alarm 21007624 Photoelectric
(48)
$45.00 New
$45.00 New
---- Used
No used products available
34
Rank 34
Kidde 30CUAR-V Hardwired Combo Smoke Carbon Monoxide Detector & Voice Alerts
$44.00 New
$44.00 New
$39.99 Used
$39.99 Used
35
Rank 35
Kidde P12040 Interconnect Photoelectric Smoke Alarm - 21006371
(21)
$20.00 New
$20.00 New
---- Used
No used products available
36
Rank 36
Airthings Wave Mini Smart Indoor Quality Monitor Model 2928
(10)
$18.95 New
$18.95 New
$17.89 Used
$17.89 Used
37
Rank 37
System Sensor 2WTA-B I3 Series Smoke Detector
(6)
$59.99 New
$59.99 New
$19.00 Used
$19.00 Used
38
Rank 38
Kidde Smart Smoke Detector Model P4010ACS-WF
(1)
$26.09 New
$26.09 New
$18.00 Used
$18.00 Used
39
Rank 39
Kidde Firex Battery Operated Smoke and Carbon Monoxide Detector - White
(39)
$22.49 New
$22.49 New
---- Used
No used products available
40
Rank 40
Kidde 21026056 Model i9040 Ionization Smoke Alarm
(182)
$7.95 New
$7.95 New
---- Used
No used products available
41
Rank 41
Kidde 30CUA10 Smoke & Carbon Monoxide Alarm Hardwired 10-Year Battery
$35.00 New
$35.00 New
---- Used
No used products available
42
Rank 42
2-Pack Kidde (P3010CU) 10-Year Smoke and CO2 Detector -
(1)
$55.75 New
$55.75 New
---- Used
No used products available
43
Rank 43
Kidde 21028744 Smoke Alarm - i9010
(42)
$24.95 New
$24.95 New
$15.00 Used
$15.00 Used
44
Rank 44
First Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery Backup
(8)
$59.95 New
$59.95 New
$27.50 Used
$27.50 Used
45
Rank 45
BRK Electronics FG250B 9v Battery Operated Smoke Alarm
(82)
$14.88 New
$14.88 New
---- Used
No used products available
46
Rank 46
Kidde KN-COEG-3 Explosive Gas Alarm Carbon Monoxide Alarm Detector with Battery
(107)
$45.00 New
$45.00 New
$18.40 Used
$18.40 Used
47
Rank 47
Kidde 21029886 Firex Smoke Detector Hardwired with Battery Backup Front Load D
(20)
$26.99 New
$26.99 New
---- Used
No used products available
48
Rank 48
Kidde 21031466 10-Year Battery Smoke Detector with LED Alarm 20sd10
$22.00 New
$22.00 New
---- Used
No used products available
49
Rank 49
Kidde 30CUAR Hardwired Smoke & Carbon Monoxide Detector AA Battery Backup
$34.99 New
$34.99 New
---- Used
No used products available
50
Rank 50
Kidde i4618 Firex Hardwired Smoke Alarm
(2)
$27.95 New
$27.95 New
$19.99 Used
$19.99 Used
51
Rank 51
First Alert Photoelectric Smoke Alarm 2 Pack
(61)
$39.97 New
$39.97 New
$25.00 Used
$25.00 Used
52
Rank 52
First Alert CO400 Carbon Monoxide Alarm Detector
(170)
$16.99 New
$16.99 New
$14.00 Used
$14.00 Used
53
Rank 53
First Alert Wireless Smoke & Carbon Monoxide Alarm White (FAT1039839)
(25)
$24.98 New
$24.98 New
$19.99 Used
$19.99 Used
54
Rank 54
Kidde P3010CU Smoke and Carbon Monoxide Combination Detector - White, 2 Pack
(19)
$59.99 New
$59.99 New
---- Used
No used products available
55
Rank 55
Kidde P4010ACSAQ-WF Indoor Smoke Alarm - White
(1)
$27.98 New
$27.98 New
$22.00 Used
$22.00 Used
56
Rank 56
Kidde 9CO5-LP2 Battery Powered Carbon Monoxide Alarm
(104)
$8.99 New
$8.99 New
---- Used
No used products available
57
Rank 57
First Alert 7020BSL Hardwired LED Strobe Light Smoke Alarm - White
(2)
$58.99 New
$58.99 New
---- Used
No used products available
58
Rank 58
First Alert Smoke Detector - White
(18)
$19.95 New
$19.95 New
---- Used
No used products available
59
Rank 59
Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery
(33)
$25.19 New
$25.19 New
$23.99 Used
$23.99 Used
60
Rank 60
First Alert 9120B6CP Smoke Detector Alarm - 6 Pack
(4)
$74.95 New
$74.95 New
---- Used
No used products available
61
Rank 61
First Alert Onelink Safe & Sound Smoke and Carbon Monoxide Alarm
(8)
$274.95 New
$274.95 New
$148.99 Used
$148.99 Used
62
Rank 62
Airthings 2950 Smart Radon Detector - White
(6)
$97.00 New
$97.00 New
$86.89 Used
$86.89 Used
63
Rank 63
First Alert BRK SC02B Carbon Monoxide & Smoke Alarm
(79)
$34.99 New
$34.99 New
---- Used
No used products available
64
Rank 64
First Alert 3120B Hardwired Smoke Alarm
(2)
$34.99 New
$34.99 New
$12.00 Used
$12.00 Used
65
Rank 65
Kidde C3010 Lithium Battery Powered Carbon Monoxide Alarm (21010073)
(1)
$20.95 New
$20.95 New
$14.99 Used
$14.99 Used
66
Rank 66
Kidde Smoke and Carbon Monoxide Detector (P4010ACSCO-W)
(4)
$39.00 New
$39.00 New
$35.95 Used
$35.95 Used
67
Rank 67
First Alert 1039868 Battery-Powered Smoke & Carbon Monoxide Alarm - White
(84)
$28.87 New
$28.87 New
---- Used
No used products available
68
Rank 68
Kidde 10-Year Interconnected Smoke Detector with Photoelectric Sensor 21031556
(3)
$28.99 New
$28.99 New
$25.46 Used
$25.46 Used
69
Rank 69
RV Co & Propane Alarm 12 V Flush Mounted LP Detector Model 7770 Brown
(3)
$59.00 New
$59.00 New
---- Used
No used products available
70
Rank 70
2GIG CO8 Wireless Carbon Monoxide Detector - White
(2)
$94.99 New
$94.99 New
---- Used
No used products available
71
Rank 71
Kidde I12060 Smoke Alarm - White
(39)
$38.00 New
$38.00 New
---- Used
No used products available
72
Rank 72
First Alert BRK SC9120B Hardwired Smoke and Carbon Monoxide Detector
(16)
$64.98 New
$64.98 New
---- Used
No used products available
73
Rank 73
Kidde Carbon Monoxide Alarm 120v Direct Wire W Battery Backup 900-0120 B24
(15)
$25.00 New
$25.00 New
$10.00 Used
$10.00 Used
74
Rank 74
2gig SMKT8 Smoke, Heat and Freeze Detector (2GIG-SMKT8-345)
(4)
$64.99 New
$64.99 New
---- Used
No used products available
75
Rank 75
BRK HD6135FB Smoke Alarm
(21)
$22.00 New
$22.00 New
---- Used
No used products available
76
Rank 76
Kidde Detect Smoke Alarm Model 20SA10 - Hardwired 10 YEARS BATT. ( 2 PACKS )
$20.00 New
$20.00 New
---- Used
No used products available
77
Rank 77
Ring 4SS1S8-0EN0 Alarm Smoke & CO Listener
(14)
$23.90 New
$23.90 New
$17.99 Used
$17.99 Used
78
Rank 78
First Alert C0400 Carbon Monoxide Alarm - White
(39)
$16.99 New
$16.99 New
$14.89 Used
$14.89 Used
79
Rank 79
Kidde i9050 Battery Operated Smoke Alarm ( in )
(5)
$15.00 New
$15.00 New
---- Used
No used products available
80
Rank 80
Kidde 30CUD10 10-Year Battery Powered Smoke & Carbon Monoxide Detector w/LED
$27.88 New
$27.88 New
$25.00 Used
$25.00 Used
81
Rank 81
Kidde 900-0102A Battery Operated Combination Smoke/Carbon Monoxide Alarm with Voice Warning
(83)
$44.95 New
$44.95 New
---- Used
No used products available
82
Rank 82
Kidde Smoke & Carbon Monoxide Alarm P3010k-co 21010646
(4)
$28.99 New
$28.99 New
---- Used
No used products available
83
Rank 83
Kidde Smoke And Carbon Monoxide Alarm ( 30CUDR-V)
$28.95 New
$28.95 New
---- Used
No used products available
84
Rank 84
BRK 7010B 120V AC/DC Photo Smoke Alarm
(1)
$25.00 New
$25.00 New
---- Used
No used products available
85
Rank 85
Honeywell 5800COMBO Carbon Monoxide Detector
(3)
$229.99 New
$229.99 New
$70.00 Used
$70.00 Used
86
Rank 86
10 Year Kidde Smoke Alarm Detector Interconnected With Photoelectric Sensor
$21.18 New
$21.18 New
---- Used
No used products available
87
Rank 87
First Alert FATCO605 Carbon Monoxide Detector Alarm Plug-In with Battery Backup
(1)
$24.99 New
$24.99 New
---- Used
No used products available
88
Rank 88
Kidde 30CUD10 Detect Smoke Carbon Monoxide 10 Year Battery Powered
(2)
$20.00 New
$20.00 New
---- Used
No used products available
89
Rank 89
First Alert RD1 Radon Gas Test Kit for Home
(57)
$23.17 New
$23.17 New
---- Used
No used products available
90
Rank 90
First Alert SC9120LBL Smoke and Carbon Monoxide Alarm
(7)
$45.00 New
$45.00 New
$24.49 Used
$24.49 Used
91
Rank 91
First Alert CO605 Carbon Monoxide Plug-In Alarm with Battery
(32)
$21.95 New
$21.95 New
$17.50 Used
$17.50 Used
92
Rank 92
Kidde C3010-D CO Alarm Battery Operated w/Digital Display-Open Box
(1)
$21.00 New
$21.00 New
$20.99 Used
$20.99 Used
93
Rank 93
Airthings 2930 Air Quality Monitor
(14)
$145.00 New
$145.00 New
---- Used
No used products available
94
Rank 94
Kidde Smoke Alarm - Never Replace Battery Last 10 Years I9010 21007387
(1)
$21.99 New
$21.99 New
---- Used
No used products available
95
Rank 95
First Alert CO605 Plug-In Carbon Monoxide Alarm
(7)
$13.56 New
$13.56 New
$9.99 Used
$9.99 Used
96
Rank 96
First Alert SCO5CN Combination Smoke and Carbon Monoxide Alarm
(1)
$20.00 New
$20.00 New
---- Used
No used products available
97
Rank 97
System Sensor CO1224T Carbon Monoxide Detector
(7)
$69.99 New
$69.99 New
---- Used
No used products available
98
Rank 98
First Alert 1039727 Battery-powered Carbon Monoxide Alarm With Backlit Digital
$35.00 New
$35.00 New
---- Used
No used products available
99
Rank 99
BRK - (6) Contractor - SMICO100-AC Hardwired Smoke & Carbon Monoxide Detector
(1)
$20.00 New
$20.00 New
---- Used
No used products available
100
Rank 100
Resideo 5800COV Wireless CO Detector Honeywell
$95.95 New
$95.95 New
---- Used
No used products available
