Apply to be a TradeMaster!
Filter menu expanded

Filters

73 items
Reset

SORT

Product Availability

Show In Stock Only (50)

Brand

BRK (26)
First Alert (4)
Honeywell Analytics (2)
Inficon (1)
iO HVAC Controls (11)
Kidde (24)
Shelly (2)
System Sensor (1)
UEi Test Instruments (2)

Product Type

Battery (1)
Carbon Monoxide Detector (38)
Carbon Monoxide Monitor (1)
CO Alarm (1)
CO Detector (4)
Explosive Gas Detector (1)
Gas Detector (4)
Module (1)
Relay (1)
Signaling Device (1)

Battery Type

3V Lithium Ion (2)
9V Alkaline (9)
AA (12)
AA Alkaline (4)
Lithium (10)
Lithium-Ion (5)

Sensor Type

Electrochemical (22)
Ionization (7)
Photoelectric (10)

Review Score

(14)
(1)

Price Range

$5 to $10 (1)
$20 to $25 (4)
$25 to $30 (2)
$30 to $35 (5)
$35 to $40 (4)
$40 to $45 (5)
$50 to $60 (11)
$60 to $70 (8)
$70 to $80 (6)
$80 to $90 (3)

Carbon Monoxide Detectors

73 items
Grid
List
Compare
Product Image of KN-COU-B Ultra Sensitive AA Battery Powered Carbon Monoxide Monitor
$59.73 each
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Compare
Product Image of KN-COB-IC Hardwired Carbon Monoxide Alarm (120v) w/ 9v Battery Backup
KN-COB-IC Hardwired Carbon Monoxide Alarm (120v) w/ 9v Battery Backup
SKU: 21006406-KIDDE
Kidde
SKU: 21006406-KIDDE
Brand: Kidde
(9)
$39.08 each
In Stock
Get 18 by Tue, Jul 7
In Stock
Get 18 by Tue, Jul 7
Compare
Product Image of SMICO100 Battery-Operated 2-in-1 Smoke & Carbon Monoxide Alarm
$35.82 each
In Stock
Get 171 by Tue, Jul 7
In Stock
Get 171 by Tue, Jul 7
Compare
Product Image of SMICO100-AC Interconnectable Ion Smoke & CO Alarm
$57.16 each
In Stock
Get 163 by Tue, Jul 7
In Stock
Get 163 by Tue, Jul 7
Compare
Product Image of KN-COB-LP2 AA Battery Operated Carbon Monoxide Alarm
$33.32 each
BOX UP & SAVE 6%
$93.60 box of 3
$31.20 each
In Stock
Get 261 by Wed, Jul 8
In Stock
Get 261 by Wed, Jul 8
Compare
Product Image of 30CUA10-V Hard-Wired Carbon Monoxide and Photoelectric Smoke Alarm (120 V) w/ 10-Year Backup Battery
$73.54 each
In Stock
Get 18 by Tue, Jul 7
In Stock
Get 18 by Tue, Jul 7
Compare
Product Image of KN-COEG-3 Plug-In Carbon Monoxide and Explosive Gas Alarm (120v) w/ Digital Display and 9v Battery Backup
$60.80 each
In Stock
Get 18 by Tue, Jul 7
In Stock
Get 18 by Tue, Jul 7
Compare
Product Image of 900-CUAR Hardwired Smoke and Carbon Monoxide Alarm (120v) w/ AA Battery Backup
$59.13 each
In Stock
Get 9 by Tue, Jul 7
In Stock
Get 9 by Tue, Jul 7
Compare
Product Image of CO120X Carbon Monoxide Alarm Relay Module
$25.17 each
In Stock
Get 3 by Tue, Jul 7
In Stock
Get 3 by Tue, Jul 7
Compare
Product Image of SMICO105-AC Interconnectable Ion Smoke & CO Alarm w/ 10-Year Battery Backup
$64.63 each
In Stock
Get 6 by Tue, Jul 7
In Stock
Get 6 by Tue, Jul 7
Compare
Product Image of DETECT 30CUAR-V Combination Smoke & Carbon Monoxide Alarm, Hardwired w/ AA Backup Battery & Voice Alerts
$65.27 each
In Stock
Get 79 by Tue, Jul 7
In Stock
Get 79 by Tue, Jul 7
Compare
Product Image of SMCO210 10-Year Sealed Battery Smoke & CO Alarm
$43.55 each
In Stock
Get 91 by Tue, Jul 7
In Stock
Get 91 by Tue, Jul 7
Compare
Product Image of KN-COB-DP2 Plug-In Carbon Monoxide Alarm (120v) w/ AA Battery Backup
$32.63 each
In Stock
Get 21 by Tue, Jul 7
In Stock
Get 21 by Tue, Jul 7
Compare
Product Image of KN-COP-IC Hardwired Carbon Monoxide Alarm w/ Digital Display (120) w/ 9v Battery Backup
$74.76 each
In Stock
Get 22 by Tue, Jul 7
In Stock
Get 22 by Tue, Jul 7
Compare
Product Image of Carbon Monoxide Detector (12/24V), CO1224T
$93.25 each
In Stock
Get 24 by Tue, Jul 7
In Stock
Get 24 by Tue, Jul 7
Compare
Product Image of Two Year Power Supply 9 Volt Battery (2 Pack)
Two Year Power Supply 9 Volt Battery (2 Pack)
SKU: 21026967
Kidde
SKU: 21026967
Brand: Kidde
(6)
$8.44 each
BOX UP & SAVE 2%
$41.20 box of 5
$8.24 each
In Stock
Get 1 by Thu, Jul 9
In Stock
Get 1 by Thu, Jul 9
Compare
Product Image of SMCO100V-AC Interconnect Hardwire Smoke & CO Alarm w/  Battery Backup & Voice
$61.64 each
In Stock
Get 88 by Tue, Jul 7
In Stock
Get 88 by Tue, Jul 7
Compare
Product Image of SMCO500V Interconnect Battery-Operated Smoke & CO Alarm w/  Voice
$53.03 each
In Stock
Get 24 by Tue, Jul 7
In Stock
Get 24 by Tue, Jul 7
Compare
Product Image of GCO1 Combo Explosive Gas and Carbon Monoxide Alarm w/ Digital Display
$57.68 each
In Stock
Get 26 by Tue, Jul 7
In Stock
Get 26 by Tue, Jul 7
Compare
Product Image of 30CUDR-V AA Battery Operated Intelligent Ionization Smoke and Carbon Monoxide Alarm
$68.41 each
In Stock
Get 8 by Tue, Jul 7
In Stock
Get 8 by Tue, Jul 7
Compare
Product Image of SMICO110 10-Year Sealed Battery Ionization Smoke & CO Alarm
$42.97 each
In Stock
Get 86 by Tue, Jul 7
In Stock
Get 86 by Tue, Jul 7
Compare
Product Image of KN-COPP-3 Plug-In Carbon Monoxide Alarm (120v) w/ Digital Display and 9v Battery Backup
$50.16 each
In Stock
Get 7 by Tue, Jul 7
In Stock
Get 7 by Tue, Jul 7
Compare
Product Image of KN-COPP-B-LP (KN-COPP-B-LS) Nighthawk Carbon Monoxide Alarm AA Battery Operated w/ Digital Display
$36.97 each
In Stock
Get 2 by Wed, Jul 8
In Stock
Get 2 by Wed, Jul 8
Compare
Product Image of KN-COB-B-LP (KN-COB-B-LS) Nighthawk Carbon Monoxide Alarm AA Battery Operated
$25.00 each
In Stock
Get 30 by Tue, Jul 7
In Stock
Get 30 by Tue, Jul 7
Compare
Product Image of 30CUD10 Carbon Monoxide & Photoelectric Smoke Alarm w/ 10-Year Backup Battery
$62.34 each
In Stock
Get 12 by Tue, Jul 7
In Stock
Get 12 by Tue, Jul 7
Compare
Product Image of KN-COPP-B-LPM AA Battery Operated Carbon Monoxide Alarm w/ Digital Display
$30.26 each
In Stock
Get 6 by Tue, Jul 7
In Stock
Get 6 by Tue, Jul 7
Compare
Product Image of SC5 Hardwired Smart WiFi Smoke & Carbon Monoxide Alarm
SC5 Hardwired Smart WiFi Smoke & Carbon Monoxide Alarm
SKU: SMCO600NV-AC
BRK
SKU: SMCO600NV-AC
Brand: BRK
$129.99 each
In Stock
Get 19 by Tue, Jul 7
In Stock
Get 19 by Tue, Jul 7
Compare
Product Image of C3010D Lithium Battery Powered Carbon Monoxide Alarm w/ Digital Display
$66.08 each
In Stock
Get 4 by Tue, Jul 7
In Stock
Get 4 by Tue, Jul 7
Compare
Product Image of CO Check Carbon Monoxide Meter
CO Check Carbon Monoxide Meter
SKU: 715-202-G1
Inficon
SKU: 715-202-G1
Brand: Inficon
(1)
$339.56 each
In Stock
Get 3 by Tue, Jul 7
In Stock
Get 3 by Tue, Jul 7
Compare
Product Image of KN-COP-DP-10YL Plug-In Living Area Carbon Monoxide Alarm (120v) w/ Digital Display and Lithium Battery Backup
$107.46 each
In Stock
Get 21 by Tue, Jul 7
In Stock
Get 21 by Tue, Jul 7
Compare
Product Image of SC5 Battery-Powered Smart WiFi Smoke & Carbon Monoxide Alarm
$129.99 each
In Stock
Get 10 by Tue, Jul 7
In Stock
Get 10 by Tue, Jul 7
Compare
Product Image of Battery Powered Combination Smoke and Carbon Monoxide Detector w/ Alarm LED Warning Lights & Voice Alerts
$78.89 each
In Stock
Get 9 by Tue, Jul 7
In Stock
Get 9 by Tue, Jul 7
Compare
Product Image of SMCO200 Battery-Operated 2-in-1 Smoke & CO Alarm w/  Slim Profile Design
$40.30 each
In Stock
Get 12 by Tue, Jul 7
In Stock
Get 12 by Tue, Jul 7
Compare
Product Image of C3010 Lithium Battery Powered Carbon Monoxide Alarm
$61.63 each
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Compare
Product Image of Qel Carbon Monoxide Smart Sensor Replacement, 0-250 Ppm, For Q5/B5 & Q6/B6 Gas Detection, 85930-018-001
$196.81 each
In Stock
Get 3 by Fri, Jul 10 - Tue, Jul 14
In Stock
Get 3 by Fri, Jul 10 - Tue, Jul 14
Compare
Product Image of Smart Relay - 120V, RM4
Smart Relay - 120V, RM4
SKU: RM4
BRK
SKU: RM4
Brand: BRK
$20.74 each
In Stock
Get 3 by Wed, Jul 8
In Stock
Get 3 by Wed, Jul 8
Compare
Product Image of COL Carbon Monoxide Logger
$654.49 each
In Stock
Get 2 by Tue, Jul 7
In Stock
Get 2 by Tue, Jul 7
Compare
Product Image of Fixed Gas Detector, 24Vac/24Vdc, 50-1000ppm, Carbon Monoxide (CO), 4-20mA, SPLCC1BAXCXNZZ
$842.18 each
In Stock
Get 1 by Wed, Jul 8
In Stock
Get 1 by Wed, Jul 8
Compare
Product Image of Battery-Operated Carbon Monoxide Alarm w/ Backlit Digital Display
$32.98 each
In Stock
Get 4 by Tue, Jul 7
In Stock
Get 4 by Tue, Jul 7
Compare
Product Image of Carbon Monoxide Alarm w/ 10-Year Battery & Digital Temperature Display
$41.23 each
In Stock
Get 2 by Tue, Jul 7
In Stock
Get 2 by Tue, Jul 7
Compare
Product Image of Hardwired Combo Smoke and Carbon Monoxide Alarm w/ LED Strobe & 10-Year Battery Backup
$143.73 each
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Compare
Product Image of SMCO200V Battery-Operated 2-in-1 Smoke Alarm & CO Alarm w/  Voice Alerts
$51.33 each
In Stock
Get 4 by Thu, Jul 9
In Stock
Get 4 by Thu, Jul 9
Compare
Product Image of Qel Nitrogen Dioxide Smart Sensor Replacement, 0-10 Ppm, For Q5/B5 & Q6/B6 Gas Detection, 85930-018-005
$469.07 each
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Compare
Product Image of Smoke and Carbon Monoxode Alarm w/ Slim Profile Design & 10 Year Battery Backup (6 Pack)
$265.27 each
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Compare
Product Image of Interconnect Hardwire Smoke and Carbon Monoxide Alarm w/ Battery Backup & Voice (6 Pack)
$421.18 each
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Out of Stock
Get it by Tue, Jul 21 - Tue, Jul 28
Compare
Product Image of Interconnect Hardwire Smoke and Carbon Monoxide Alarm w/ Battery Backup (6 Pack)
$348.18 each
In Stock
Get 2 by Wed, Jul 8
In Stock
Get 2 by Wed, Jul 8
Compare
Product Image of KN-COP-DP-10YB Plug-In Bedroom Carbon Monoxide Alarm (120v) w/ Digital Display, Lithium Battery Backup, and Voice Alarm
$75.23 each
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Compare
Product Image of 4 Sensor Digital Controller W/ Relay Board (4 x Spdt, 10 A) + Isolated 4-20 Ma Or 2-10 Vdc Output Board, Q4C-A-RT0
$1,107.07 each
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1
Backorder
Get it by Tue, Aug 4 - Tue, Sep 1