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Best selling products: Best
Bluetooth Home Carbon Monoxide Detectors Detectors
Bestselling
Top Rated
1
Rank 1
Google Nest Protect Smoke and Carbon Monoxide Alarm 2nd Gen - S3000BWES
(400)
$115.99 New
$115.99 New
$34.95 Used
$34.95 Used
2
Rank 2
Google Nest Protect Carbon Monoxide Smoke Detector - S3003LWES
(203)
$139.99 New
$139.99 New
$79.99 Used
$79.99 Used
3
Rank 3
AirThings 2951 Wave Radon 2nd Gen Radon Detector (E10039737)
(1)
$39.95 New
$39.95 New
---- Used
No used products available
4
Rank 4
BRK First Alert 9120B Smoke Detector
(566)
$11.00 New
$11.00 New
---- Used
No used products available
5
Rank 5
BRK SC9120B Smoke & Carbon Monoxide Detector
(22)
$47.00 New
$47.00 New
$25.00 Used
$25.00 Used
6
Rank 6
Honeywell 5800SMOKEV Wireless Smoke Heat Detecto Factory / w Battery
(2)
$59.99 New
$59.99 New
---- Used
No used products available
7
Rank 7
Google Nest Temperature Sensor - White (T5000SF)
(83)
$23.79 New
$23.79 New
$16.99 Used
$16.99 Used
8
Rank 8
Kidde Smart Smoke Carbon Monoxide Alarm Detector - P4010ACSCOAQWF
(7)
$34.99 New
$34.99 New
$29.91 Used
$29.91 Used
9
Rank 9
Digital Radon Detector Airthings 2350
(97)
$50.00 New
$50.00 New
$29.97 Used
$29.97 Used
10
Rank 10
SITERWELL Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Co...
(1)
$54.51 New
$54.51 New
---- Used
No used products available
11
Rank 11
4 x Siterwell LCD 10 Year Carbon Monoxide (CO) Alarm Detector Portable For Home
$64.59 New
$64.59 New
---- Used
No used products available
12
Rank 12
Kidde 21007581 Hardwired Smoke Alarm with Battery Backup
(217)
$28.00 New
$28.00 New
$10.00 Used
$10.00 Used
13
Rank 13
KIDDE Smoke Alarm with Smart Features Model P4010ACS-WF Hard Wired w/Backup
(1)
$24.20 New
$24.20 New
---- Used
No used products available
14
Rank 14
Kidde 21026056 Model i9040 Ionization Smoke Alarm
(183)
$15.00 New
$15.00 New
---- Used
No used products available
15
Rank 15
4 Kidde Smoke & Carbon Monoxide Detector AA Battery Powered LED Warning Light
(1)
$35.00 New
$35.00 New
---- Used
No used products available
16
Rank 16
Kidde i9010 Smoke Alarm
(9)
$18.99 New
$18.99 New
---- Used
No used products available
17
Rank 17
Kidde KN-COEG-3 Explosive Gas Alarm Carbon Monoxide Alarm Detector with Battery
(107)
$39.95 New
$39.95 New
$19.95 Used
$19.95 Used
18
Rank 18
SITERWELL Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Combo
$148.99 New
$148.99 New
---- Used
No used products available
19
Rank 19
First Alert SC9120B Smoke and Carbon Monoxide Detector
(329)
$49.99 New
$49.99 New
$19.99 Used
$19.99 Used
20
Rank 20
Kidde 21006377 Hardwired Combination Carbon Monoxide & Smoke Alarm
(181)
$119.98 New
$119.98 New
$25.45 Used
$25.45 Used
21
Rank 21
Kidde P4010ACSCO-WF Smoke + Carbon Monoxide Smart Alarm
(1)
$32.95 New
$32.95 New
---- Used
No used products available
22
Rank 22
Airthings Wave Mini Smart Indoor Quality Monitor Model 2928
(11)
$17.95 New
$17.95 New
$17.89 Used
$17.89 Used
23
Rank 23
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
24
Rank 24
Kidde P4010ACSAQ-WF Indoor Smoke Alarm - White
(1)
$15.50 New
$15.50 New
---- Used
No used products available
25
Rank 25
Kidde KN-COSM-BA Battery Operated Combination Smoke and Carbon Monoxide Alarm - White
(30)
$75.50 New
$75.50 New
---- Used
No used products available
26
Rank 26
Kidde 21006378 Hardwire Smoke Alarm Detector
(123)
$16.00 New
$16.00 New
---- Used
No used products available
27
Rank 27
Google Nest 2nd Gen Protect Smoke and Carbon Monoxide Alarm Detector with Battery - White
(39)
$100.00 New
$100.00 New
$79.99 Used
$79.99 Used
28
Rank 28
Kidde 21007588 120V AC wire-in Hush Smoke Alarm with Battery Backup - 4 Pack
(40)
$93.06 New
$93.06 New
$69.99 Used
$69.99 Used
29
Rank 29
First Alert Z-Wave Smoke & Carbon Monoxide Detector Works with Ring
(31)
$40.00 New
$40.00 New
$17.86 Used
$17.86 Used
30
Rank 30
Ring 4SS1S8-0EN0 Alarm Smoke & CO Listener
(15)
$22.99 New
$22.99 New
$17.99 Used
$17.99 Used
31
Rank 31
Kidde Firex Battery Operated Smoke and Carbon Monoxide Detector - White
(39)
$39.99 New
$39.99 New
---- Used
No used products available
32
Rank 32
USI Electric MI3050SB 2-in-1 Smoke and Fire Smart Alarm
(5)
$12.00 New
$12.00 New
---- Used
No used products available
33
Rank 33
Kidde 21008697 Smoke Detector Alarm - White
(22)
$18.50 New
$18.50 New
---- Used
No used products available
34
Rank 34
Kidde Worry-Free Combination Smoke and Carbon Monoxide Alarm
(38)
$39.99 New
$39.99 New
$24.99 Used
$24.99 Used
35
Rank 35
First Alert 9120B6CP Smoke Alarm - 6 Pack
(38)
$92.99 New
$92.99 New
---- Used
No used products available
36
Rank 36
Airthings 223 Corentium Home Radon Detector
(189)
$89.00 New
$89.00 New
$44.99 Used
$44.99 Used
37
Rank 37
Kidde 900-CUAR Smoke & Carbon Monoxide Detector Alarm - 21032250
(7)
$29.99 New
$29.99 New
$28.95 Used
$28.95 Used
38
Rank 38
Kidde 30CUA10 Smoke & Carbon Monoxide Alarm Hardwired 10-Year Battery Open Box
$26.00 New
$26.00 New
---- Used
No used products available
39
Rank 39
Kidde 201025759 120V Tamper Resistant Plug-In Carbon Monoxide Detector
(54)
$19.00 New
$19.00 New
$15.00 Used
$15.00 Used
40
Rank 40
Kidde KN-COPP-B-LPM Battery Operated Carbon Monoxide Alarm
(2)
$19.94 New
$19.94 New
---- Used
No used products available
41
Rank 41
Kidde i4618 Firex Hardwired Smoke Alarm
(2)
$27.95 New
$27.95 New
---- Used
No used products available
42
Rank 42
First Alert 9120B6CP Smoke Detector Alarm - 6 Pack
(4)
$89.99 New
$89.99 New
---- Used
No used products available
43
Rank 43
Kidde FIREX Hardwired AA Smoke Carbon Monoxide Alarm 21033083
$39.99 New
$39.99 New
---- Used
No used products available
44
Rank 44
RV Co & Propane Alarm 12 V Flush Mounted LP Detector Model 7770 Brown
(3)
$69.00 New
$69.00 New
---- Used
No used products available
45
Rank 45
Kidde KN-COP-DP-10YL-AQ-WF Carbon Monoxide Alarm w/ Indoor Air Quality Monitor
(3)
$24.00 New
$24.00 New
---- Used
No used products available
46
Rank 46
First Alert Smoke Detector - White
(19)
$18.99 New
$18.99 New
$14.89 Used
$14.89 Used
47
Rank 47
Kidde 20SA10 Smoke Detector Hardwire Interconnect 10 Year Battery Back Up
(1)
$31.00 New
$31.00 New
---- Used
No used products available
48
Rank 48
Kidde Smoke & Carbon Monoxide Detector Wired W/ Batt Backup 30CUAR-V
$34.95 New
$34.95 New
---- Used
No used products available
49
Rank 49
Kidde I12060 Smoke Alarm - White
(41)
$36.99 New
$36.99 New
$22.00 Used
$22.00 Used
50
Rank 50
Kidde P4010ACS-W AC Hardwired Smoke Alarm
(1)
$49.99 New
$49.99 New
$21.80 Used
$21.80 Used
51
Rank 51
Kidde 900007601 Nighthawk Carbon Monoxide Alarm with Digital Display - White
(184)
$22.97 New
$22.97 New
$15.50 Used
$15.50 Used
52
Rank 52
Kidde P3010CU Smoke and Carbon Monoxide Combination Detector - White, 2 Pack
(19)
$59.99 New
$59.99 New
---- Used
No used products available
53
Rank 53
Kidde FireX KN-COPE-IC Smoke & Carbon Monoxide Alarm 21007624 Photoelectric
(50)
$39.99 New
$39.99 New
---- Used
No used products available
54
Rank 54
Kidde 21029886 Firex Smoke Detector Hardwired with Battery Backup Front Load D
(20)
$24.99 New
$24.99 New
---- Used
No used products available
55
Rank 55
Airthings 2950 Smart Radon Detector - White
(6)
$59.95 New
$59.95 New
$42.99 Used
$42.99 Used
56
Rank 56
Kidde Carbon Monoxide Alarm 120v Direct Wire W Battery Backup 900-0120 B24
(15)
$25.00 New
$25.00 New
$20.50 Used
$20.50 Used
57
Rank 57
4pk Kidde Smoke & Carbon Monoxide Detector 10 Year Battery Power LED Warning
$99.00 New
$99.00 New
---- Used
No used products available
58
Rank 58
First Alert CO400 Carbon Monoxide Alarm Detector
(172)
$10.99 New
$10.99 New
---- Used
No used products available
59
Rank 59
First Alert BRK SC7010BV Talking Photoelectric Smoke and Carbon Monoxide Alarm - White
(50)
$170.15 New
$170.15 New
---- Used
No used products available
60
Rank 60
System Sensor CO1224T Carbon Monoxide Detector
(7)
$69.99 New
$69.99 New
$59.00 Used
$59.00 Used
61
Rank 61
BRK Hardwire w/Battery Backup SMI100-AC Ionization Smoke Alarm Cat. 1046836 E13
$15.00 New
$15.00 New
---- Used
No used products available
62
Rank 62
First Alert CO605 Carbon Monoxide Plug-In Alarm with Battery
(32)
$19.89 New
$19.89 New
$14.99 Used
$14.99 Used
63
Rank 63
Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery
(33)
$27.99 New
$27.99 New
$23.99 Used
$23.99 Used
64
Rank 64
Kidde 10 Year Sealed-In Battery-Powered Ionization Smoke Alarm
(6)
$19.99 New
$19.99 New
---- Used
No used products available
65
Rank 65
Kidde 900-CUAR-V Smoke & Carbon Monoxide Detector - 21032084
(2)
$89.99 New
$89.99 New
---- Used
No used products available
66
Rank 66
Kidde Photoelectric Smoke Alarm 10 Year Battery P3010l C2
(2)
$23.95 New
$23.95 New
---- Used
No used products available
67
Rank 67
Kidde 21006377-N FIREX Combination Smoke & Carbon Monoxide Alarm KN-COSM-IBA
$114.98 New
$114.98 New
---- Used
No used products available
68
Rank 68
First Alert 7020BSL Hardwired LED Strobe Light Smoke Alarm - White
(2)
$84.99 New
$84.99 New
---- Used
No used products available
69
Rank 69
Kidde 30CUD10 Detect Smoke Carbon Monoxide 10 Year Battery Powered NEW
(2)
$24.99 New
$24.99 New
---- Used
No used products available
70
Rank 70
First Alert Wireless Smoke & Carbon Monoxide Alarm White (FAT1039839)
(25)
$35.99 New
$35.99 New
$19.99 Used
$19.99 Used
71
Rank 71
X-Sense Combination SC07 Smoke
(5)
$23.99 New
$23.99 New
---- Used
No used products available
72
Rank 72
Kidde C3010D CO Alarm Carbon Monoxide Detector Digital Display 21032285 -
$19.98 New
$19.98 New
---- Used
No used products available
73
Rank 73
Kidde 4-Pack 20SAR Hardwired Interconnected Photoelectric Senor Smoke Detector
$109.00 New
$109.00 New
---- Used
No used products available
74
Rank 74
Honeywell Resido 5800CMBOV Combination Smoke / CO Detector
$168.99 New
$168.99 New
---- Used
No used products available
75
Rank 75
Kidde 20SD10 21031468 10-Year 3 Pack Smoke Detector w/ LED Warning Lights
$26.99 New
$26.99 New
---- Used
No used products available
76
Rank 76
2 Kidde Firex Hardwire Smoke Alarm Detector w/ Battery Backup Model i4618AC
(9)
$20.00 New
$20.00 New
---- Used
No used products available
77
Rank 77
Kidde P4010ACSCOAQ-WF Smart Hardwired Smoke and Carbon Monoxide Detector 10yr
$32.95 New
$32.95 New
---- Used
No used products available
78
Rank 78
BRK Hard-Wired w/Battery Back-up Ionization Smoke Detector 6-Pack
$98.95 New
$98.95 New
---- Used
No used products available
79
Rank 79
First Alert 1039828 Dual-sensor Battery Smoke Fire Alarm
(6)
$15.00 New
$15.00 New
---- Used
No used products available
80
Rank 80
First Alert CO1210CP1 Carbon Monoxide Alarm - White
(29)
$25.99 New
$25.99 New
$15.00 Used
$15.00 Used
81
Rank 81
First Alert RD1 Radon Gas Test Kit for Home
(57)
$21.09 New
$21.09 New
---- Used
No used products available
82
Rank 82
Kidde KN-SMFM-I Smoke Alarm - 4 Pack
$205.00 New
$205.00 New
---- Used
No used products available
83
Rank 83
Kidde 21031482 Hardwired Interconnected SmokeAlarm Detector Photoelectric Sendor
$17.99 New
$17.99 New
---- Used
No used products available
84
Rank 84
First Alert C0400 Carbon Monoxide Alarm - White
(39)
$15.75 New
$15.75 New
$14.89 Used
$14.89 Used
85
Rank 85
Kidde Code One Combo Alarm Smoke Wired 900-CUAR - White (21032251)
(5)
$83.21 New
$83.21 New
---- Used
No used products available
86
Rank 86
Kidde Smoke Alarm Dual Sensor Photoelectric & Ionization 9v Powered PI9010
(3)
$28.00 New
$28.00 New
$14.99 Used
$14.99 Used
87
Rank 87
First Alert 1039772 Photoelectric Smoke and Fire Alarm White
(1)
$10.95 New
$10.95 New
---- Used
No used products available
88
Rank 88
System Sensor 2WTA-B I3 Series Smoke Detector
(6)
$60.00 New
$60.00 New
$19.00 Used
$19.00 Used
89
Rank 89
2GIG CO8 Wireless Carbon Monoxide Detector - White
(2)
$90.00 New
$90.00 New
---- Used
No used products available
90
Rank 90
First Alert 3120B Hardwired Smoke Alarm
(2)
$32.19 New
$32.19 New
---- Used
No used products available
91
Rank 91
Airthings 2930 Air Quality Monitor
(14)
$129.99 New
$129.99 New
---- Used
No used products available
92
Rank 92
Kidde Smart Smoke Detector WiFi Alexa Compatible Hardwired Mobile Alert B30
$19.95 New
$19.95 New
---- Used
No used products available
93
Rank 93
Honeywell Resideo 5800COV Carbon Monoxide CO Detector Replaced 5800CO
$84.99 New
$84.99 New
---- Used
No used products available
94
Rank 94
First Alert SC7010B Smoke & Carbon Monoxide Alarm
(11)
$39.99 New
$39.99 New
$29.99 Used
$29.99 Used
95
Rank 95
First Alert 1039746 Dual-Power Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display
(8)
$27.75 New
$27.75 New
$18.00 Used
$18.00 Used
96
Rank 96
Honeywell 5808W3 Photoelectronic Smoke and Heat Detector
(59)
$124.99 New
$124.99 New
$70.00 Used
$70.00 Used
97
Rank 97
Kidde Combo Smoke and Carbon Monoxide Alarm P3010k
(8)
$34.95 New
$34.95 New
---- Used
No used products available
98
Rank 98
2 BRK 9120BP First Alert Smoke Alarm Detector Battery Backup 120v Hardwired
(6)
$19.99 New
$19.99 New
---- Used
No used products available
99
Rank 99
BRK Brands CO5120BN Hardwire Carbon Monoxide Alarm With Battery Backup
(17)
$39.49 New
$39.49 New
---- Used
No used products available
100
Rank 100
AirThings Wave Mini Air Quality Monitors Bluetooth Compatible 2 Pack
$19.00 New
$19.00 New
$16.55 Used
$16.55 Used
