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Best selling products: Best
First Alert Bluetooth Home Smoke & Gas Detectors
Bestselling
Top Rated
1
Rank 1
Google Nest Protect Smoke and Carbon Monoxide Alarm 2nd Gen - S3000BWES
(406)
$147.45 New
$147.45 New
$39.99 Used
$39.99 Used
2
Rank 2
Google Nest Protect Carbon Monoxide Smoke Detector - S3003LWES
(205)
$16.00 New
$16.00 New
$14.54 Used
$14.54 Used
3
Rank 3
Kidde i4618 Firex Hardwired Smoke Alarm
(2)
$25.00 New
$25.00 New
---- Used
No used products available
4
Rank 4
Airthings Wave Radon Battery Operated Smart Radon Detector 2951
(5)
$39.00 New
$39.00 New
$35.00 Used
$35.00 Used
5
Rank 5
BRK First Alert 9120B Smoke Detector
(570)
$21.26 New
$21.26 New
$15.25 Used
$15.25 Used
6
Rank 6
Kidde 21007581 Hardwired Smoke Alarm with Battery Backup
(221)
$27.95 New
$27.95 New
$23.99 Used
$23.99 Used
7
Rank 7
2025 SITERWELL Hardwired Combination Carbon Monoxide & Smoke Alarm Authentic
(1)
$48.99 New
$48.99 New
---- Used
No used products available
8
Rank 8
Honeywell 5800SMOKEV Wireless Smoke Heat Detecto Factory / w Battery
(2)
$55.00 New
$55.00 New
$45.95 Used
$45.95 Used
9
Rank 9
Kidde 10 Year Sealed-In Battery-Powered Ionization Smoke Alarm
(7)
$17.99 New
$17.99 New
---- Used
No used products available
10
Rank 10
Kidde 30CUA10 Smoke & Carbon Monoxide Alarm Hardwired 10-Year Battery
$39.55 New
$39.55 New
---- Used
No used products available
11
Rank 11
Kidde Detect Smoke Alarm -2 Pack - Model 20SD10 - 10-Year Battery - Made in 2024
$30.36 New
$30.36 New
---- Used
No used products available
12
Rank 12
Kidde 21006378 Hardwire Smoke Alarm Detector
(124)
$29.00 New
$29.00 New
---- Used
No used products available
13
Rank 13
Digital Radon Detector Airthings 2350
(99)
$50.00 New
$50.00 New
$43.99 Used
$43.99 Used
14
Rank 14
Kidde 120v Hardwire Smoke Detector Battery Backup Voice Alarm P4010acs
(3)
$21.99 New
$21.99 New
---- Used
No used products available
15
Rank 15
Google Nest Temperature Sensor - White (T5000SF)
(84)
$19.64 New
$19.64 New
$15.99 Used
$15.99 Used
16
Rank 16
Kidde 30CUAR-V Smoke Carbon Monoxide Detector Alarm Hardwire Battery
$38.99 New
$38.99 New
---- Used
No used products available
17
Rank 17
BRK SMI100-AC Interconnect Hardwire Ionization Smoke Alarm (6-Pack) 1046838 BRK
$96.95 New
$96.95 New
---- Used
No used products available
18
Rank 18
3 PACK SITERWELL Hardwired Smoke Alarm Carbon Monoxide Detector Interconnected
$131.99 New
$131.99 New
---- Used
No used products available
19
Rank 19
Kidde Detect Smoke Carbon Monoxide Alarm 10-Year Battery 30CUD10
$29.99 New
$29.99 New
$20.99 Used
$20.99 Used
20
Rank 20
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
21
Rank 21
Kidde P4010ACSCO-WF Smoke + Carbon Monoxide Smart Alarm
(1)
$43.99 New
$43.99 New
---- Used
No used products available
22
Rank 22
Kidde 30CUAR Detect Smoke Carbon Monoxide Alarm
(3)
$29.99 New
$29.99 New
---- Used
No used products available
23
Rank 23
First Alert 9120B6CP Smoke Alarm - 6 Pack
(38)
$89.26 New
$89.26 New
$12.34 Used
$12.34 Used
24
Rank 24
5 five Kidde 30cua10 Smoke And Carbon All
$42.95 New
$42.95 New
---- Used
No used products available
25
Rank 25
BRK SC9120B Smoke & Carbon Monoxide Detector
(24)
$50.00 New
$50.00 New
$28.99 Used
$28.99 Used
26
Rank 26
Ring 4SS1S8-0EN0 Alarm Smoke & CO Listener
(16)
$22.99 New
$22.99 New
$17.99 Used
$17.99 Used
27
Rank 27
Kidde 21006377 Hardwired Combination Carbon Monoxide & Smoke Alarm
(181)
$114.97 New
$114.97 New
$60.00 Used
$60.00 Used
28
Rank 28
Airthings 223 Corentium Home Radon Detector
(192)
$49.00 New
$49.00 New
$46.89 Used
$46.89 Used
29
Rank 29
Kidde KN-COEG-3 Explosive Gas Alarm Carbon Monoxide Alarm Detector with Battery
(111)
$38.99 New
$38.99 New
$19.99 Used
$19.99 Used
30
Rank 30
First Alert Z-Wave Smoke & Carbon Monoxide Detector Works with Ring
(31)
$24.99 New
$24.99 New
$16.07 Used
$16.07 Used
31
Rank 31
First Alert Smoke Detector - White
(19)
$15.00 New
$15.00 New
$13.45 Used
$13.45 Used
32
Rank 32
Kidde Smoke Carbon Monoxide Detector Wire- Interconnect 900-0225
(3)
$39.99 New
$39.99 New
---- Used
No used products available
33
Rank 33
First Alert CO710 Carbon Monoxide Detector with Digital Temperature Display (1039753)
(10)
$27.95 New
$27.95 New
$9.00 Used
$9.00 Used
34
Rank 34
Kidde KN-COPP-B-LPM Battery Operated Carbon Monoxide Alarm w/Digital Display 824
(3)
$23.99 New
$23.99 New
---- Used
No used products available
35
Rank 35
System Sensor 2WTA-B I3 Series Smoke Detector
(6)
$50.00 New
$50.00 New
$20.24 Used
$20.24 Used
36
Rank 36
Kidde 900-CUAR Smoke & Carbon Monoxide Detector Alarm - 21032250
(8)
$35.00 New
$35.00 New
$28.95 Used
$28.95 Used
37
Rank 37
2 PK Kidde Smoke Alarm with Smart Features Model P4010ACS-WF Backup Battery
(1)
$20.00 New
$20.00 New
---- Used
No used products available
38
Rank 38
Kidde P4010ACSAQ-WF Indoor Smoke Alarm - White
(4)
$19.99 New
$19.99 New
---- Used
No used products available
39
Rank 39
Kidde i9030 Smoke Detector Alarm
(13)
$12.99 New
$12.99 New
$4.00 Used
$4.00 Used
40
Rank 40
Kidde 21026056 Model i9040 Ionization Smoke Alarm
(186)
$18.11 New
$18.11 New
$13.50 Used
$13.50 Used
41
Rank 41
Kidde 21028744 Smoke Alarm - i9010
(43)
$18.99 New
$18.99 New
$9.95 Used
$9.95 Used
42
Rank 42
First Alert CO605 Carbon Monoxide Plug-In Alarm with Battery
(32)
---- New
No new products available
---- Used
No used products available
43
Rank 43
Kidde Smart Hardwired Wi-Fi Enabled Smoke Alarm with Photoelectric Sensor
(1)
$17.95 New
$17.95 New
---- Used
No used products available
44
Rank 44
Airthings Wave Mini Smart Indoor Quality Monitor Model 2928
(10)
$17.95 New
$17.95 New
---- Used
No used products available
45
Rank 45
Airthings 322 Wave Enhance Indoor Air Quality Monitor
$159.95 New
$159.95 New
---- Used
No used products available
46
Rank 46
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
47
Rank 47
Kidde i9010 Smoke Alarm
(11)
$18.88 New
$18.88 New
---- Used
No used products available
48
Rank 48
First Alert Photoelectric Smoke Alarm 2 Pack
(65)
$49.99 New
$49.99 New
$23.95 Used
$23.95 Used
49
Rank 49
Lot Of (6) Kidde Firex Smoke Detector Hardwired
$27.99 New
$27.99 New
---- Used
No used products available
50
Rank 50
Kidde 21029886 Firex Smoke Detector Hardwired with Battery Backup Front Load D
(21)
$29.99 New
$29.99 New
---- Used
No used products available
51
Rank 51
Airthings 2950 Smart Radon Detector - White
(7)
$37.99 New
$37.99 New
---- Used
No used products available
52
Rank 52
Kidde FireX KN-COPE-IC Smoke & Carbon Monoxide Alarm 21007624 Photoelectric
(51)
$46.00 New
$46.00 New
$24.99 Used
$24.99 Used
53
Rank 53
Kidde Firex Battery Operated Smoke and Carbon Monoxide Detector - White
(39)
$37.99 New
$37.99 New
---- Used
No used products available
54
Rank 54
BRK 1046858 FirstAlert Ionization Smoke Alarm with Lithium Battery (SMI110)
$17.99 New
$17.99 New
---- Used
No used products available
55
Rank 55
BRK SMI105-AC First Alert AC Powered Hardwire Smoke Alarm 1046850
$18.99 New
$18.99 New
---- Used
No used products available
56
Rank 56
Kidde 9CO5-LP2 Battery Powered Carbon Monoxide Alarm
(106)
$10.79 New
$10.79 New
---- Used
No used products available
57
Rank 57
First Alert SC9120B Smoke and Carbon Monoxide Detector
(329)
$59.26 New
$59.26 New
$24.97 Used
$24.97 Used
58
Rank 58
X-SENSE 3pack Combination Smoke and Carbon Monoxide Alarm - 10 YR Batt Life SC07
(6)
$20.95 New
$20.95 New
---- Used
No used products available
59
Rank 59
Kidde 201025759 120V Tamper Resistant Plug-In Carbon Monoxide Detector
(56)
$17.07 New
$17.07 New
$9.75 Used
$9.75 Used
60
Rank 60
2-PACK Airthings Wave Mini 2928 Battery Operate Smart Indoor Air Quality Monitor
(1)
$19.50 New
$19.50 New
$16.55 Used
$16.55 Used
61
Rank 61
SAFE-T-ALERT 35-742-WHT 603.111 Safe-T-Alert 35-742-WT Dual LP/CO Alarm - 12V
$35.00 New
$35.00 New
---- Used
No used products available
62
Rank 62
First Alert C0400 Carbon Monoxide Alarm - White
(39)
$16.49 New
$16.49 New
$9.99 Used
$9.99 Used
63
Rank 63
Universal Security Instruments MIC3510SB Smoke, Fire, Carbon Monoxide Alarm
(10)
$39.99 New
$39.99 New
---- Used
No used products available
64
Rank 64
First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Battery
(107)
$20.00 New
$20.00 New
---- Used
No used products available
65
Rank 65
Interconnectable Wireless Photoelectric Smoke Alarm Battery Backup Fire Detector
$44.79 New
$44.79 New
---- Used
No used products available
66
Rank 66
Kidde KN-COP-DP-10YL-AQ-WF Carbon Monoxide Alarm w/ Indoor Air Quality Monitor
(3)
$26.72 New
$26.72 New
$17.99 Used
$17.99 Used
67
Rank 67
System Sensor CO1224T Carbon Monoxide Detector
(7)
$49.99 New
$49.99 New
$20.00 Used
$20.00 Used
68
Rank 68
First Alert SCO5CN Combination Smoke and Carbon Monoxide Alarm
(1)
$22.99 New
$22.99 New
---- Used
No used products available
69
Rank 69
Kidde Detect Smoke Alarm 20SA10 10-Year Never Change Battery and Smoke B44
(3)
$25.82 New
$25.82 New
---- Used
No used products available
70
Rank 70
Honeywell Resido 5800CMBOV Combination Smoke / CO Detector
$399.00 New
$399.00 New
---- Used
No used products available
71
Rank 71
KIDDE SMOKE AND CARBON DETECT SMOKE CARBON MONOXIDE ALARM 30CUAR
$39.95 New
$39.95 New
---- Used
No used products available
72
Rank 72
Kidde 30CUD10-V Smoke/Carbon Monoxide Detector 10-Year Batt. Voice Alerts E27
$34.00 New
$34.00 New
---- Used
No used products available
73
Rank 73
First Alert CO400 Carbon Monoxide Alarm Detector
(174)
$16.00 New
$16.00 New
$14.00 Used
$14.00 Used
74
Rank 74
BRK 7010B 120V AC/DC Photo Smoke Alarm
(1)
$220.75 New
$220.75 New
$40.00 Used
$40.00 Used
75
Rank 75
First Alert CO250B Carbon Monoxide Alarm Detector
(21)
$12.95 New
$12.95 New
---- Used
No used products available
76
Rank 76
First Alert 1042409 Photoelectric Smoke Detector - 2 Pack
(11)
$28.99 New
$28.99 New
---- Used
No used products available
77
Rank 77
Kidde 900007601 Nighthawk Carbon Monoxide Alarm with Digital Display - White
(186)
$21.95 New
$21.95 New
$14.99 Used
$14.99 Used
78
Rank 78
First Alert Wireless Smoke & Carbon Monoxide Alarm White (FAT1039839)
(25)
$34.94 New
$34.94 New
$19.49 Used
$19.49 Used
79
Rank 79
Airthings 2930 Air Quality Monitor
(15)
$169.99 New
$169.99 New
$159.02 Used
$159.02 Used
80
Rank 80
Kidde Carbon Monoxide Alarm 120v Direct Wire W Battery Backup 900-0120 B24
(15)
$32.95 New
$32.95 New
$25.00 Used
$25.00 Used
81
Rank 81
First Alert CO1210CP1 Carbon Monoxide Alarm - White
(29)
$12.77 New
$12.77 New
---- Used
No used products available
82
Rank 82
Honeywell Resideo Prosixsmokev Sixsmokeva 2-way Wireless Smoke Detector
$64.95 New
$64.95 New
---- Used
No used products available
83
Rank 83
First Alert 1039871 Alarm Smoke - White
(37)
$24.99 New
$24.99 New
---- Used
No used products available
84
Rank 84
Kidde Carbon Monoxide Alarm Kn-copp-b Nighthawk Technology See Notes
(5)
$19.99 New
$19.99 New
$14.00 Used
$14.00 Used
85
Rank 85
First Alert 1039868 Battery-Powered Smoke & Carbon Monoxide Alarm - White
(84)
$24.99 New
$24.99 New
---- Used
No used products available
86
Rank 86
Kidde Detect Smoke Alarm Model 20SD10-V 10 Year battery
$25.00 New
$25.00 New
---- Used
No used products available
87
Rank 87
Kidde Quick Connect Wiring Adapter for Hardwired Smoke and CM Detectors 21032239
(2)
$7.66 New
$7.66 New
---- Used
No used products available
88
Rank 88
Kidde Firex Smoke & Carbon Monoxide Alarm 21033083 CUACFEX Hardwire & Battery
$38.12 New
$38.12 New
---- Used
No used products available
89
Rank 89
Smoke Alarm Carbon Monoxide Combination X-Sense SC07 Photoelectric Sensor
(5)
$24.99 New
$24.99 New
---- Used
No used products available
90
Rank 90
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
91
Rank 91
First Alert Co400 Carbon Monoxide Detector Battery Operated -
(2)
$17.99 New
$17.99 New
$13.76 Used
$13.76 Used
92
Rank 92
First Alert 1046731 10-YEAR BATTERY SMOKE ALARM SM210
$22.86 New
$22.86 New
---- Used
No used products available
93
Rank 93
BRK- (6) Count (6) Pack - SMCO210 - AC Battery Smoke & Carbon Monoxide Detector
$99.99 New
$99.99 New
---- Used
No used products available
94
Rank 94
Kidde Pi9010 Smoke Detector Alarm
(11)
$29.99 New
$29.99 New
---- Used
No used products available
95
Rank 95
Kidde i9050 Battery Operated Smoke Alarm ( in )
(6)
$17.50 New
$17.50 New
---- Used
No used products available
96
Rank 96
BRK 1046864 SMICO100 Battery-Operated 2-In-1 Smoke & Carbon Monoxide Alarm
$57.45 New
$57.45 New
---- Used
No used products available
97
Rank 97
BRK Hardwire w/Battery Backup SMI100-AC Ionization Smoke Alarm
$18.00 New
$18.00 New
---- Used
No used products available
98
Rank 98
First Alert RD1 Radon Gas Test Kit for Home
(57)
$17.99 New
$17.99 New
---- Used
No used products available
99
Rank 99
(2) BRK ELECTRONICS SMI100 BATTERY OPERATED SMOKE ALARMS-
$18.00 New
$18.00 New
$12.90 Used
$12.90 Used
100
Rank 100
First Alert CO605 Carbon Monoxide Plug-In Alarm - White
(59)
$19.99 New
$19.99 New
$14.99 Used
$14.99 Used
