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Best selling products: Best
First Alert Powerline/UPB Home Smoke & Gas Detectors
Bestselling
Top Rated
1
Rank 1
Google Nest Protect Smoke and Carbon Monoxide Alarm 2nd Gen - S3000BWES
(406)
$150.00 New
$150.00 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
BRK First Alert 9120B Smoke Detector
(569)
$17.00 New
$17.00 New
$15.25 Used
$15.25 Used
4
Rank 4
Kidde i4618 Firex Hardwired Smoke Alarm
(2)
$25.00 New
$25.00 New
---- Used
No used products available
5
Rank 5
Kidde 10 Year Sealed-In Battery-Powered Ionization Smoke Alarm
(7)
$16.99 New
$16.99 New
---- Used
No used products available
6
Rank 6
Kidde Smart Smoke Carbon Monoxide Alarm Detector - P4010ACSCOAQWF
(7)
$39.95 New
$39.95 New
---- Used
No used products available
7
Rank 7
Kidde 21007581 Hardwired Smoke Alarm with Battery Backup
(221)
$27.87 New
$27.87 New
$18.99 Used
$18.99 Used
8
Rank 8
Kidde i9010 Smoke Alarm
(11)
$14.99 New
$14.99 New
---- Used
No used products available
9
Rank 9
Airthings Wave Radon Battery Operated Smart Radon Detector 2951
(4)
$34.48 New
$34.48 New
---- Used
No used products available
10
Rank 10
First Alert SC9120LBL Smoke and Carbon Monoxide Alarm
(7)
$54.00 New
$54.00 New
$29.97 Used
$29.97 Used
11
Rank 11
2025 SITERWELL Hardwired Combination Carbon Monoxide & Smoke Alarm Authentic
(1)
$48.99 New
$48.99 New
---- Used
No used products available
12
Rank 12
Digital Radon Detector Airthings 2350
(99)
$48.00 New
$48.00 New
$43.99 Used
$43.99 Used
13
Rank 13
Kidde Detect Smoke Alarm -2 Pack - Model 20SD10 - 10-Year Battery
$30.36 New
$30.36 New
---- Used
No used products available
14
Rank 14
Google Nest Temperature Sensor - White (T5000SF)
(84)
$18.49 New
$18.49 New
---- Used
No used products available
15
Rank 15
5 five Kidde 30cua10 Smoke And Carbon All
$45.00 New
$45.00 New
---- Used
No used products available
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
BRK SC9120B Smoke & Carbon Monoxide Detector
(24)
$52.00 New
$52.00 New
$28.99 Used
$28.99 Used
18
Rank 18
Kidde 21031468 3-Pack 10-Year Battery Smoke Detectors with LED Alarm Lights
$54.90 New
$54.90 New
---- Used
No used products available
19
Rank 19
Kidde Smoke Carbon Monoxide detector Alarm 10-Year Battery 30CUD10
$29.99 New
$29.99 New
$20.99 Used
$20.99 Used
20
Rank 20
Kidde 30CUAR-V Smoke Carbon Monoxide Detector Alarm Hardwire Battery
$42.99 New
$42.99 New
---- Used
No used products available
21
Rank 21
Honeywell 5800SMOKEV Wireless Smoke Heat Detecto Factory / w Battery
(2)
$55.00 New
$55.00 New
$45.95 Used
$45.95 Used
22
Rank 22
First Alert 9120B6CP Smoke Alarm - 6 Pack
(38)
$89.26 New
$89.26 New
$12.34 Used
$12.34 Used
23
Rank 23
Kidde P4010ACSCO-WF Smoke + Carbon Monoxide Smart Alarm
(1)
$32.99 New
$32.99 New
---- Used
No used products available
24
Rank 24
SITERWELL Hardwired Smoke Alarm Carbon Monoxide Detector Interconnected - 6 Pack
$131.99 New
$131.99 New
---- Used
No used products available
25
Rank 25
Kidde I12060 Smoke Alarm - White
(41)
$29.00 New
$29.00 New
---- Used
No used products available
26
Rank 26
First Alert CO710 Carbon Monoxide Detector with Digital Temperature Display (1039753)
(10)
$27.95 New
$27.95 New
$9.00 Used
$9.00 Used
27
Rank 27
Kidde 900-CUAR-V Smoke & Carbon Monoxide Detector - 21032084
(2)
$38.00 New
$38.00 New
---- Used
No used products available
28
Rank 28
Kidde 21006377 Hardwired Combination Carbon Monoxide & Smoke Alarm
(181)
$119.00 New
$119.00 New
$60.00 Used
$60.00 Used
29
Rank 29
Kidde Detect Smoke Alarm 20SA10 10-Year Never Change Battery and Smoke Alarm
(3)
$25.99 New
$25.99 New
---- Used
No used products available
30
Rank 30
First Alert Smoke Detector - White
(19)
$21.95 New
$21.95 New
$13.45 Used
$13.45 Used
31
Rank 31
Airthings 223 Corentium Home Radon Detector
(192)
$69.99 New
$69.99 New
$49.00 Used
$49.00 Used
32
Rank 32
Ring 4SS1S8-0EN0 Alarm Smoke & CO Listener
(16)
$22.99 New
$22.99 New
$17.99 Used
$17.99 Used
33
Rank 33
Kidde KN-COEG-3 Explosive Gas Alarm Carbon Monoxide Alarm Detector with Battery
(111)
$39.99 New
$39.99 New
$21.99 Used
$21.99 Used
34
Rank 34
System Sensor 2WTA-B I3 Series Smoke Detector
(6)
$54.40 New
$54.40 New
$20.24 Used
$20.24 Used
35
Rank 35
Kidde 21026056 Model i9040 Ionization Smoke Alarm
(186)
$18.11 New
$18.11 New
$13.50 Used
$13.50 Used
36
Rank 36
Kidde 21028744 Smoke Alarm - i9010
(43)
$18.99 New
$18.99 New
$9.95 Used
$9.95 Used
37
Rank 37
First Alert 1046731 10-YEAR BATTERY SMOKE ALARM SM210
$22.86 New
$22.86 New
---- Used
No used products available
38
Rank 38
System Sensor CO1224T Carbon Monoxide Detector
(7)
$69.99 New
$69.99 New
$20.00 Used
$20.00 Used
39
Rank 39
(2) BRK ELECTRONICS SMI100 BATTERY OPERATED SMOKE ALARMS-
$13.99 New
$13.99 New
$12.90 Used
$12.90 Used
40
Rank 40
Kidde 21008697 Smoke Detector Alarm - White
(23)
$14.99 New
$14.99 New
---- Used
No used products available
41
Rank 41
First Alert SC9120B Smoke and Carbon Monoxide Detector
(329)
$59.26 New
$59.26 New
$24.97 Used
$24.97 Used
42
Rank 42
First Alert Z-Wave Smoke & Carbon Monoxide Detector Works with Ring
(31)
$24.99 New
$24.99 New
$16.07 Used
$16.07 Used
43
Rank 43
Kidde 21029886 Firex Smoke Detector Hardwired with Battery Backup Front Load D
(21)
$29.99 New
$29.99 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
Kidde i9030 Smoke Detector Alarm
(13)
$12.04 New
$12.04 New
$5.00 Used
$5.00 Used
46
Rank 46
Kidde Smoke And Carbon Monoxide Alarm - Model 30CUD10 - See Pics
$28.99 New
$28.99 New
---- Used
No used products available
47
Rank 47
Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery
(33)
$26.99 New
$26.99 New
$24.99 Used
$24.99 Used
48
Rank 48
Kidde Firex Battery Operated Smoke and Carbon Monoxide Detector - White
(39)
$37.99 New
$37.99 New
---- Used
No used products available
49
Rank 49
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
50
Rank 50
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
51
Rank 51
Kidde 900-0102A Battery Operated Combination Smoke/Carbon Monoxide Alarm with Voice Warning
(83)
$39.99 New
$39.99 New
$39.99 Used
$39.99 Used
52
Rank 52
Kidde 201025759 120V Tamper Resistant Plug-In Carbon Monoxide Detector
(56)
$18.97 New
$18.97 New
$9.75 Used
$9.75 Used
53
Rank 53
Kidde 900007601 Nighthawk Carbon Monoxide Alarm with Digital Display - White
(186)
$24.99 New
$24.99 New
$15.50 Used
$15.50 Used
54
Rank 54
X-SENSE 3pack Combination Smoke and Carbon Monoxide Alarm - 10 YR Batt Life SC07
(6)
$25.00 New
$25.00 New
---- Used
No used products available
55
Rank 55
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
56
Rank 56
Kidde 30CUA10 Smoke & Carbon Monoxide Alarm Hardwired 10-Year Battery
$34.99 New
$34.99 New
---- Used
No used products available
57
Rank 57
2gig SMKT8 Smoke, Heat and Freeze Detector (2GIG-SMKT8-345)
(4)
$74.99 New
$74.99 New
---- Used
No used products available
58
Rank 58
Kidde FireX KN-COPE-IC Smoke & Carbon Monoxide Alarm 21007624 Photoelectric
(51)
$33.05 New
$33.05 New
$24.99 Used
$24.99 Used
59
Rank 59
Kidde KN-COPP-B-LPM Carbon Monoxide Alarm Digital Display
(3)
$18.99 New
$18.99 New
---- Used
No used products available
60
Rank 60
First Alert CO400 Carbon Monoxide Alarm Detector
(173)
$16.95 New
$16.95 New
$6.99 Used
$6.99 Used
61
Rank 61
Kidde - 21033081 - SMACFEX - Smoke Alarm with Battery Backup - Hardwired
$28.00 New
$28.00 New
---- Used
No used products available
62
Rank 62
Kidde Smoke Carbon Monoxide Detector Wire- Interconnect 900-0225
(3)
$39.99 New
$39.99 New
---- Used
No used products available
63
Rank 63
Kidde Smoke and Carbon Monoxide Detector (P4010ACSCO-W)
(4)
$49.95 New
$49.95 New
$20.99 Used
$20.99 Used
64
Rank 64
BRK SMI100-AC Smoke Alarms - Hardwired with Battery Backup
$18.00 New
$18.00 New
---- Used
No used products available
65
Rank 65
Google Nest 2nd Gen Protect Smoke and Carbon Monoxide Alarm Detector with Battery - White
(39)
$139.99 New
$139.99 New
$25.00 Used
$25.00 Used
66
Rank 66
Kidde Hardwired Smart Smoke Detector with Battery Back-up 85 decibel alarm &
(1)
$18.95 New
$18.95 New
---- Used
No used products available
67
Rank 67
Kidde 900-CUAR Smoke & Carbon Monoxide Detector Alarm - 21032250
(8)
$39.99 New
$39.99 New
$28.95 Used
$28.95 Used
68
Rank 68
Airthings 2950 Smart Radon Detector - White
(7)
$48.99 New
$48.99 New
$44.99 Used
$44.99 Used
69
Rank 69
Kidde Voice Smoke Carbon Monoxide CO Alarms 2Pk 10 Year Battery
(1)
$59.49 New
$59.49 New
---- Used
No used products available
70
Rank 70
Kidde 120v Hardwire Smoke Detector Battery Backup Voice Alarm P4010acs
(3)
$19.99 New
$19.99 New
---- Used
No used products available
71
Rank 71
First Alert BRK SC7010BV Talking Photoelectric Smoke and Carbon Monoxide Alarm - White
(50)
$59.99 New
$59.99 New
---- Used
No used products available
72
Rank 72
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
73
Rank 73
Interconnectable Wireless Photoelectric Smoke Alarm Battery Backup Fire Detector
$44.79 New
$44.79 New
---- Used
No used products available
74
Rank 74
Honeywell Resideo Prosixsmokev Sixsmokeva 2-way Wireless Smoke Detector
$64.95 New
$64.95 New
---- Used
No used products available
75
Rank 75
First Alert CO1210CP1 Carbon Monoxide Alarm - White
(29)
$12.77 New
$12.77 New
---- Used
No used products available
76
Rank 76
First Alert CO605 Carbon Monoxide Plug-In Alarm with Battery
(32)
$18.49 New
$18.49 New
$12.49 Used
$12.49 Used
77
Rank 77
KIDDE SMOKE AND CARBON DETECT SMOKE CARBON MONOXIDE ALARM 30CUAR
$34.99 New
$34.99 New
---- Used
No used products available
78
Rank 78
Kidde Alarm Smoke Carbon Monoxide Combination 30CUDR DETECT 2 AA Battery
(2)
$35.00 New
$35.00 New
---- Used
No used products available
79
Rank 79
First Alert CO250B Carbon Monoxide Alarm Detector
(21)
$5.95 New
$5.95 New
---- Used
No used products available
80
Rank 80
Kidde 9CO5-LP2 Battery Powered Carbon Monoxide Alarm
(106)
$10.79 New
$10.79 New
---- Used
No used products available
81
Rank 81
First Alert C0400 Carbon Monoxide Alarm - White
(39)
$14.99 New
$14.99 New
$9.99 Used
$9.99 Used
82
Rank 82
Kidde Quick Connect Smoke Detector Adapter Plug Smoke Alarm Wiring Harness ...
(2)
$7.66 New
$7.66 New
---- Used
No used products available
83
Rank 83
First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Battery
(107)
$24.98 New
$24.98 New
---- Used
No used products available
84
Rank 84
Airthings 2930 Air Quality Monitor
(15)
$169.99 New
$169.99 New
$80.00 Used
$80.00 Used
85
Rank 85
Kidde 21033083 Combo Smoke/CO Alarm 5" Photoelectric Hardwired LED
$38.50 New
$38.50 New
---- Used
No used products available
86
Rank 86
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
87
Rank 87
Honeywell Resideo 5800COV Carbon Monoxide CO Detector Replaced 5800CO
$76.00 New
$76.00 New
$40.00 Used
$40.00 Used
88
Rank 88
First Alert Wireless Smoke & Carbon Monoxide Alarm White (FAT1039839)
(25)
$34.94 New
$34.94 New
$19.49 Used
$19.49 Used
89
Rank 89
BRK SMI105-AC First Alert AC Powered Hardwire Smoke Alarm 1046850
$23.99 New
$23.99 New
---- Used
No used products available
90
Rank 90
First Alert 1042409 Photoelectric Smoke Detector - 2 Pack
(11)
$19.99 New
$19.99 New
---- Used
No used products available
91
Rank 91
2pack Kidde Carbon Monoxide and Smoke Alarm Value Pack 10 Year I1040
(3)
$28.00 New
$28.00 New
---- Used
No used products available
92
Rank 92
Honeywell 5800CO Carbon Monoxide Sensor Detector
(4)
$125.00 New
$125.00 New
$72.00 Used
$72.00 Used
93
Rank 93
2 Kidde 20SA10 Smoke Alarms – Model 21032863 – Open Box
(3)
$27.99 New
$27.99 New
---- Used
No used products available
94
Rank 94
First Alert Co400 Carbon Monoxide Detector Battery Operated -
(2)
$11.00 New
$11.00 New
---- Used
No used products available
95
Rank 95
Kidde Smoke & Carbon Monoxide Alarm P3010k-co 21010646
(4)
$24.89 New
$24.89 New
---- Used
No used products available
96
Rank 96
Kidde Smoke and Carbon Monoxide Alarm 900-CUDR-V Battery Operated Wireless
$24.99 New
$24.99 New
---- Used
No used products available
97
Rank 97
First Alert 1039868 Battery-Powered Smoke & Carbon Monoxide Alarm - White
(84)
$24.99 New
$24.99 New
---- Used
No used products available
98
Rank 98
BRK Hardwire w/Battery Backup SMI100-AC Ionization Smoke Alarm O3
(1)
$17.99 New
$17.99 New
---- Used
No used products available
99
Rank 99
First Alert CO605 Carbon Monoxide Plug-In Alarm - White
(59)
$11.00 New
$11.00 New
---- Used
No used products available
100
Rank 100
Code One Battery Operated Smoke Detector with Ionization Sensor (929281) - 6 Pack
(175)
$87.99 New
$87.99 New
---- Used
No used products available
