Skip to main content
Hi
!
Hi!
Sign in
or
register
Daily Deals
Brand Outlet
Gift Cards
Help & Contact
Sell
Watchlist
Expand Watch List
My eBay
Expand My eBay
Summary
Recently Viewed
Bids/Offers
Watchlist
Purchase History
Buy Again
Selling
Saved Feed
Saved Searches
Saved Sellers
My Garage
Sizes
My Collection
Messages
PSA Vault
Expand Notifications
Please
sign-in
to view notifications.
Expand Cart
Loading...
eBay Home
Shop by category
Enter your search keyword
All Categories
Search
Advanced
Best selling products: Best
Z-Wave Home Smoke & Gas Detectors
Bestselling
Top Rated
1
Rank 1
Google Nest Protect Smoke and Carbon Monoxide Alarm 2nd Gen - S3000BWES
(406)
$154.99 New
$154.99 New
$35.00 Used
$35.00 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
Kidde i9010 Smoke Alarm
(10)
$14.99 New
$14.99 New
---- Used
No used products available
4
Rank 4
Kidde 21007588 120V AC wire-in Hush Smoke Alarm with Battery Backup - 4 Pack
(41)
$79.99 New
$79.99 New
$29.99 Used
$29.99 Used
5
Rank 5
BRK First Alert 9120B Smoke Detector
(568)
$17.00 New
$17.00 New
$15.75 Used
$15.75 Used
6
Rank 6
Honeywell 5800SMOKEV Wireless Smoke Heat Detecto Factory / w Battery
(2)
$55.00 New
$55.00 New
$45.95 Used
$45.95 Used
7
Rank 7
Google Nest 2nd Gen Protect Smoke and Carbon Monoxide Alarm Detector with Battery - White
(39)
$145.00 New
$145.00 New
$51.30 Used
$51.30 Used
8
Rank 8
2025 SITERWELL Hardwired Combination Carbon Monoxide & Smoke Alarm Authentic
(1)
$48.99 New
$48.99 New
---- Used
No used products available
9
Rank 9
Google Nest Temperature Sensor - White (T5000SF)
(84)
$22.69 New
$22.69 New
$18.99 Used
$18.99 Used
10
Rank 10
TWO Airthings Wave Radon Battery Operated Smart Radon Detectors 2951
(3)
$34.45 New
$34.45 New
---- Used
No used products available
11
Rank 11
Kidde 21007581 Hardwired Smoke Alarm with Battery Backup
(220)
$30.00 New
$30.00 New
$9.99 Used
$9.99 Used
12
Rank 12
Kidde P4010ACSCO-WF Smoke + Carbon Monoxide Smart Alarm
(1)
$33.99 New
$33.99 New
---- Used
No used products available
13
Rank 13
Kidde 10 Year Sealed-In Battery-Powered Ionization Smoke Alarm
(7)
$18.49 New
$18.49 New
---- Used
No used products available
14
Rank 14
Kidde 21008697 Smoke Detector Alarm - White
(22)
$16.99 New
$16.99 New
---- Used
No used products available
15
Rank 15
Kidde 30CUA10 Smoke & Carbon Monoxide Alarm Hardwired 10-Year Battery
$38.99 New
$38.99 New
---- Used
No used products available
16
Rank 16
Digital Radon Detector Airthings 2350
(99)
$50.00 New
$50.00 New
$45.00 Used
$45.00 Used
17
Rank 17
Kidde Smart Smoke Detector WiFi Alexa Compatible Hardwired Mobile Alerts
(1)
$19.00 New
$19.00 New
---- Used
No used products available
18
Rank 18
Kidde 21026056 Model i9040 Ionization Smoke Alarm
(185)
$14.95 New
$14.95 New
$13.50 Used
$13.50 Used
19
Rank 19
2 Pack BRK Hardwire w/Battery Backup SMI100-AC Ionization Smoke Alarm
$14.85 New
$14.85 New
---- Used
No used products available
20
Rank 20
Kidde 30CUAR-V Smoke CO Detector Hardwired Voice Alert Battery Backup
$36.95 New
$36.95 New
$21.24 Used
$21.24 Used
21
Rank 21
BRK SC9120B Smoke & Carbon Monoxide Detector
(23)
$59.26 New
$59.26 New
$28.99 Used
$28.99 Used
22
Rank 22
3 PACK SITERWELL battery powered Smoke Alarm/Carbon Monoxide Detector with voice
$131.99 New
$131.99 New
---- Used
No used products available
23
Rank 23
Ring 4SS1S8-0EN0 Alarm Smoke & CO Listener
(16)
$22.99 New
$22.99 New
$17.99 Used
$17.99 Used
24
Rank 24
Qty. 4 Kidde Smoke Carbon Monoxide Detector Voice Alert 30CUDR - Open Box
(1)
$109.98 New
$109.98 New
---- Used
No used products available
25
Rank 25
Kidde Detect Smoke Alarm Model 20SA10-V Hardwired
$35.43 New
$35.43 New
---- Used
No used products available
26
Rank 26
Kidde 21006377 Hardwired Combination Carbon Monoxide & Smoke Alarm
(181)
$115.99 New
$115.99 New
$27.23 Used
$27.23 Used
27
Rank 27
Kidde Smart Smoke Carbon Monoxide Alarm Detector - P4010ACSCOAQWF
(7)
$34.99 New
$34.99 New
---- Used
No used products available
28
Rank 28
First Alert 9120B6CP Smoke Alarm - 6 Pack
(38)
$89.26 New
$89.26 New
$12.34 Used
$12.34 Used
29
Rank 29
First Alert Smoke Detector - White
(19)
$18.95 New
$18.95 New
$13.45 Used
$13.45 Used
30
Rank 30
Airthings 223 Corentium Home Radon Detector
(190)
$61.38 New
$61.38 New
$53.59 Used
$53.59 Used
31
Rank 31
First Alert 7030BSL Smoke Alarm - 1038870
$119.50 New
$119.50 New
---- Used
No used products available
32
Rank 32
Kidde P4010ACSAQ-WF Indoor Smoke Alarm - White
(1)
$19.00 New
$19.00 New
---- Used
No used products available
33
Rank 33
Kidde KN-COEG-3 Explosive Gas Alarm Carbon Monoxide Alarm Detector with Battery
(111)
$29.74 New
$29.74 New
$12.00 Used
$12.00 Used
34
Rank 34
Kidde 900-CUAR-V Smoke & Carbon Monoxide Detector - 21032084
(2)
$39.99 New
$39.99 New
---- Used
No used products available
35
Rank 35
First Alert SC9120B Smoke and Carbon Monoxide Detector
(329)
$54.95 New
$54.95 New
$24.97 Used
$24.97 Used
36
Rank 36
First Alert SC9120LBL Smoke and Carbon Monoxide Alarm
(7)
$59.95 New
$59.95 New
$29.99 Used
$29.99 Used
37
Rank 37
Kidde 30CUAR Hardwired Smoke Carbon Monoxide Alarm
(3)
$33.99 New
$33.99 New
---- Used
No used products available
38
Rank 38
Kidde I12060 Smoke Alarm - White
(41)
$39.99 New
$39.99 New
$22.00 Used
$22.00 Used
39
Rank 39
Kidde Hardwired Ring App Enabled Smart Smoke Detector w/AA Backup Battery
$38.40 New
$38.40 New
---- Used
No used products available
40
Rank 40
Kidde 21028744 Smoke Alarm - i9010
(43)
$18.99 New
$18.99 New
---- Used
No used products available
41
Rank 41
Kidde 21006378 Hardwire Smoke Alarm Detector
(123)
$29.99 New
$29.99 New
---- Used
No used products available
42
Rank 42
Kidde P3010CU Smoke and Carbon Monoxide Combination Detector - White, 2 Pack
(19)
$50.00 New
$50.00 New
---- Used
No used products available
43
Rank 43
BRK SMI100-AC Interconnect Hardwire Ionization Smoke Alarm (6-Pack) 1046838 BRK
$81.70 New
$81.70 New
---- Used
No used products available
44
Rank 44
First Alert CO710 Carbon Monoxide Detector with Digital Temperature Display (1039753)
(10)
$17.60 New
$17.60 New
$9.00 Used
$9.00 Used
45
Rank 45
Kidde FireX KN-COPE-IC Smoke & Carbon Monoxide Alarm 21007624 Photoelectric
(51)
$46.00 New
$46.00 New
$24.99 Used
$24.99 Used
46
Rank 46
X-SENSE 3pack Combination Smoke and Carbon Monoxide Alarm - 10 YR Batt Life SC07
(6)
$29.95 New
$29.95 New
---- Used
No used products available
47
Rank 47
Kidde Firex Smoke & Carbon Monoxide Alarm 21033083 CUACFEX Hardwire & Battery
$39.99 New
$39.99 New
---- Used
No used products available
48
Rank 48
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
49
Rank 49
SMOKE ALARM IONIZATION BRK ELECTRONICS 83RN
$14.29 New
$14.29 New
---- Used
No used products available
50
Rank 50
Kidde 30CUD10 White Detect Combination Smoke & Carbon Monoxide Alarm Pack of 2
$29.99 New
$29.99 New
---- Used
No used products available
51
Rank 51
Airthings Wave Mini Smart Indoor Quality Monitor Model 2928
(10)
$17.95 New
$17.95 New
---- Used
No used products available
52
Rank 52
Kidde 900007601 Nighthawk Carbon Monoxide Alarm with Digital Display - White
(186)
$27.99 New
$27.99 New
$15.50 Used
$15.50 Used
53
Rank 53
2x AIRTHINGS 2928 WAVE MINI BATTERY SMART HOME AIR QUALITY MONITOR - BLUETOOTH
(1)
$13.97 New
$13.97 New
---- Used
No used products available
54
Rank 54
Kidde KN-COPP-B-LPM Battery Operated Carbon Monoxide Alarm w/Digital Display 824
(3)
$20.99 New
$20.99 New
---- Used
No used products available
55
Rank 55
First Alert CO400 Carbon Monoxide Alarm Detector
(173)
$16.00 New
$16.00 New
$14.00 Used
$14.00 Used
56
Rank 56
Kidde 201025759 120V Tamper Resistant Plug-In Carbon Monoxide Detector
(56)
$16.95 New
$16.95 New
$9.75 Used
$9.75 Used
57
Rank 57
Kidde Worry-Free Combination Smoke and Carbon Monoxide Alarm
(39)
$34.80 New
$34.80 New
$27.99 Used
$27.99 Used
58
Rank 58
Kidde 21029886 Firex Smoke Detector Hardwired with Battery Backup Front Load D
(21)
$29.47 New
$29.47 New
---- Used
No used products available
59
Rank 59
First Alert 1039868 Battery-Powered Smoke & Carbon Monoxide Alarm - White
(84)
$20.00 New
$20.00 New
---- Used
No used products available
60
Rank 60
First Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery Backup
(10)
$45.99 New
$45.99 New
$29.99 Used
$29.99 Used
61
Rank 61
Kidde Carbon Monoxide Alarm 120v Direct Wire W Battery Backup 900-0120 B24
(15)
$25.00 New
$25.00 New
$21.50 Used
$21.50 Used
62
Rank 62
Kidde 30CUA10 Smoke & Carbon Monoxide Alarm Hardwired 10-Year Battery | NEW
$35.94 New
$35.94 New
---- Used
No used products available
63
Rank 63
Kidde KN-COP-DP-10YL-AQ-WF Carbon Monoxide Alarm w/ Indoor Air Quality Monitor
(3)
$21.99 New
$21.99 New
---- Used
No used products available
64
Rank 64
Kidde i4618 Firex Hardwired Smoke Alarm
(2)
$31.00 New
$31.00 New
---- Used
No used products available
65
Rank 65
Kidde 20SD10 Smoke Detector 10-Year Battery Powered LED Warning Light
$30.36 New
$30.36 New
---- Used
No used products available
66
Rank 66
First Alert BRK SC7010BV Talking Photoelectric Smoke and Carbon Monoxide Alarm - White
(50)
$74.99 New
$74.99 New
---- Used
No used products available
67
Rank 67
System Sensor 2WTA-B I3 Series Smoke Detector
(6)
$56.00 New
$56.00 New
$17.99 Used
$17.99 Used
68
Rank 68
Kidde Smoke Detector with Photoelectric Sensor P3010L
(2)
$18.99 New
$18.99 New
---- Used
No used products available
69
Rank 69
Kidde Firex Battery Operated Smoke and Carbon Monoxide Detector - White
(39)
$39.99 New
$39.99 New
---- Used
No used products available
70
Rank 70
First Alert Powered Alarm SCO5CN Combination Smoke and Carbon Monoxide Battery
(107)
$24.99 New
$24.99 New
---- Used
No used products available
71
Rank 71
Kidde Quick Connect Smoke Detector Adapter Plug Smoke Alarm Wiring Harness ...
(2)
$7.07 New
$7.07 New
---- Used
No used products available
72
Rank 72
Kidde Smoke and Carbon Monoxide Detector (P4010ACSCO-W)
(4)
$65.00 New
$65.00 New
$29.99 Used
$29.99 Used
73
Rank 73
Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery
(33)
$26.99 New
$26.99 New
$23.99 Used
$23.99 Used
74
Rank 74
System Sensor CO1224T Carbon Monoxide Detector
(7)
$47.50 New
$47.50 New
---- Used
No used products available
75
Rank 75
Kidde Smoke Alarm with Smart Features WiFi Model P4010ACS-WF Backup Battery
$19.99 New
$19.99 New
---- Used
No used products available
76
Rank 76
2pk Kidde Smoke & Carbon Monoxide Detector 10 Year Battery Power LED Warning
$90.99 New
$90.99 New
---- Used
No used products available
77
Rank 77
Honeywell Resido 5800CMBOV Combination Smoke / CO Detector
$399.00 New
$399.00 New
---- Used
No used products available
78
Rank 78
KIDDE 30CUDR-V Combination Smoke And Carbon Monoxide Alarm White Open Box
$24.99 New
$24.99 New
---- Used
No used products available
79
Rank 79
Kidde 120v Hardwire Smoke Detector Battery Backup Voice Alarm P4010acs
(3)
$21.49 New
$21.49 New
$14.99 Used
$14.99 Used
80
Rank 80
Kidde Firex Smoke Detector Hardwired Model SMACFEX BACKUP BATTERY INCLUDED
$23.50 New
$23.50 New
---- Used
No used products available
81
Rank 81
BRK Wired Ionization Smoke Detector w/Battery SMI100-AC
$17.99 New
$17.99 New
---- Used
No used products available
82
Rank 82
Kidde Hardwired Smoke Detector Interconnectable LED Warning Indicators
(3)
$24.75 New
$24.75 New
---- Used
No used products available
83
Rank 83
Kidde Detect Smoke & Carbon Monoxide Alarm Hardwired Voice Model 30CUA10-V
$30.69 New
$30.69 New
---- Used
No used products available
84
Rank 84
Kidde 30CUD10 10-Year Lithium Battery-Operated Combination Smoke & Carbon
$24.95 New
$24.95 New
---- Used
No used products available
85
Rank 85
Kidde 9CO5-LP2 Battery Powered Carbon Monoxide Alarm
(105)
$12.49 New
$12.49 New
---- Used
No used products available
86
Rank 86
Airthings 2950 Smart Radon Detector - White
(7)
$48.99 New
$48.99 New
$44.99 Used
$44.99 Used
87
Rank 87
Honeywell Farenhyt Series Black 15-32 VDC Intelligent Addressable Photoelectric Smoke Detector (IDP-PHOTO-W)
$89.99 New
$89.99 New
---- Used
No used products available
88
Rank 88
Interconnectable Wireless Photoelectric Smoke Alarm Battery Backup Fire Detector
$44.79 New
$44.79 New
---- Used
No used products available
89
Rank 89
SimpliSafe SSSD3 Smoke Detector White
(1)
$32.95 New
$32.95 New
$27.99 Used
$27.99 Used
90
Rank 90
First Alert CO605 Carbon Monoxide Plug-In Alarm with Battery
(32)
$19.90 New
$19.90 New
$12.49 Used
$12.49 Used
91
Rank 91
KIDDE SMOKE AND CARBON DETECT SMOKE CARBON MONOXIDE ALARM 30CUAR
$29.99 New
$29.99 New
---- Used
No used products available
92
Rank 92
Honeywell Resideo 5800COV Carbon Monoxide CO Detector Replaced 5800CO
$76.00 New
$76.00 New
$40.00 Used
$40.00 Used
93
Rank 93
BULK DISCOUNT | Kidde Smoke Alarm Detector w/ Memory & Smart Hush White 3V I9010
$44.95 New
$44.95 New
---- Used
No used products available
94
Rank 94
First Alert Smoke & Fire Detector Alarm SA67D 9v
(12)
$18.99 New
$18.99 New
---- Used
No used products available
95
Rank 95
First Alert 1039939 Hardwired Smoke Alarm With Battery Backup 1
(3)
$19.96 New
$19.96 New
---- Used
No used products available
96
Rank 96
System Sensor CO1224TR Carbon Monoxide Detector - White
$65.00 New
$65.00 New
$47.00 Used
$47.00 Used
97
Rank 97
First Alert C0400 Carbon Monoxide Alarm - White
(39)
$16.98 New
$16.98 New
$14.89 Used
$14.89 Used
98
Rank 98
First Alert CO250B Carbon Monoxide Alarm Detector
(21)
$10.99 New
$10.99 New
---- Used
No used products available
99
Rank 99
Airthings 2930 Air Quality Monitor
(15)
$124.99 New
$124.99 New
$94.95 Used
$94.95 Used
100
Rank 100
First Alert 1046731 10-YEAR BATTERY SMOKE ALARM SM210
$19.99 New
$19.99 New
---- Used
No used products available
