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FIRST ALERT Alarm: Removable Battery, CO Detector, Electrochemical - Carbon Monoxide Detectors
FIRST ALERTCarbon Monoxide Detectors

FIRST ALERT Alarm: Removable Battery, CO Detector, Electrochemical

The FIRST ALERT CO Alarm (MPN CO250LB) is a carbon monoxide detector with an electrochemical sensor and a removable 9V battery. It features a Hush Button, a Test Button, and a red LED visual alert, with an 85dB alarm…

SKU 3G-OTH-551436

Brand
FIRST ALERT
Item
Alarm: Removable Battery, CO Detector, Electrochemical
Category
Carbon Monoxide Detectors
Available to Order
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Technical Specifications

FIRST ALERT
Manufacturer Part Number
CO250LB
Type
CO Detector, Electrochemical, Removable Battery
Features
Hush Button
Includes
Battery
Hush Mode
Yes
Sensor Type
Electrochemical
Test Button
Yes
Battery Size
9V
Power Source
Removable Battery
Volume Level
85dB at 10 feet
ADA Compliant
No
Battery Location
Back
Visual Alert Type
Red LED
Connectivity Broad
None
Power Source Broad
10-Year Sealed Battery
Battery Locking Pin
Yes
Battery Backup [NEW]
No
Final Features Broad
Test Button
Final Features Filter Broad
Test Button
Backup Battery Broad DELETE AFTER PLAN
No
Product Features Broad DELETE AFTER PLAN
Test Button
Product Features Filter DELETE AFTER PLAN
Front Loading Battery
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FIRST ALERT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The FIRST ALERT CO Alarm (MPN CO250LB) is a carbon monoxide detector with an electrochemical sensor and a removable 9V battery. It features a Hush Button, a Test Button, and a red LED visual alert, with an 85dB alarm at 10 feet. 3G Electric interprets your demand for life-safety equipment, sourcing this detector across our 14 industrial departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as a trust anchor.

Frequently Asked Questions

What is the FIRST ALERT CO250LB carbon monoxide alarm used for?

The FIRST ALERT CO250LB is a carbon monoxide detector with an electrochemical sensor and a removable 9V battery. It is used in residential and light-commercial settings to alert occupants to dangerous CO levels, featuring an 85dB alarm at 10 feet and a Hush Button for temporary silencing.

What are the specifications of the FIRST ALERT CO250LB?

The FIRST ALERT CO250LB is a CO detector with an electrochemical sensor, powered by a removable 9V battery located on the back. It includes a Hush Button, Test Button, and red LED visual alert. The alarm volume is 85dB at 10 feet. It does not have a sealed 10-year battery backup.

Where to buy the FIRST ALERT CO250LB worldwide?

3G Electric supplies the FIRST ALERT CO250LB carbon monoxide alarm to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this life-safety detector across 14 departments, with specialist depth in combustion, pumps and controls.

How to install the FIRST ALERT CO250LB carbon monoxide alarm?

Install the FIRST ALERT CO250LB by mounting it on a wall or ceiling per local codes, at least 5 feet from the floor and away from vents. Insert the included 9V battery into the back compartment, press the Test Button to verify operation, and use the Hush Button to silence nuisance alarms. Replace the battery annually.

Used in

Common applications for FIRST ALERT
Outdoor worksite safety — First Alert SFA900 speaker used as an audible alarm for equipment warnings
Temporary facility alert systems — First Alert SFA900 speaker installed in portable shelters for emergency notifications
Light industrial machinery — First Alert smoke alarms placed in small workshops for fire detection
Residential backup alarms — First Alert carbon monoxide detectors used in on-site trailers for worker safety
Retail or office environments — First Alert SFA900 speaker deployed as a desk-mounted alert device for security systems

FIRST ALERT Products

3G Electric supplies FIRST ALERT carbon monoxide detectors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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FIRST ALERT Carbon Monoxide Alarm: Removable Battery, CO Detector, Electrochemical, Limited (MPN 1039727). Key specifications — Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: AA; Battery Location: Front; Includes: Mounting Anchors; Brand: FIRST ALERT; Battery Backup [NEW]: No.
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FIRST ALERT Carbon Monoxide Alarm: Removable Battery, CO Detector, Electrochemical, Limited (MPN 1039727). Key specifications — Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: AA; Battery Location: Front; Includes: Mounting Anchors; Brand: FIRST ALERT; Battery Backup [NEW]: No.
FIRST ALERT Carbon Monoxide Alarm: Plug-In, Battery Backup, CO Detector, Electrochemical, Plug-In (MPN 1039746). Key specifications — Operating Voltage: 120V AC; Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: AA; Alert Type: Sound; Battery Location: Front; Includes: Screws.
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FIRST ALERT Carbon Monoxide Alarm: Plug-In, Battery Backup, CO Detector, Electrochemical, Plug-In (MPN 1039746). Key specifications — Operating Voltage: 120V AC; Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: AA; Alert Type: Sound; Battery Location: Front; Includes: Screws.
FIRST ALERT Carbon Monoxide Alarm: Removable Battery, CO Detector, Electrochemical (MPN CO400B). Key specifications — Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: 9V; Alert Type: Sound; Battery Location: Front; Includes: Mounting Anchors; Brand: FIRST ALERT.
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FIRST ALERT Carbon Monoxide Alarm: Removable Battery, CO Detector, Electrochemical (MPN CO400B). Key specifications — Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: 9V; Alert Type: Sound; Battery Location: Front; Includes: Mounting Anchors; Brand: FIRST ALERT.
FIRST ALERT Carbon Monoxide Alarm: 10 Year Sealed Battery, CO Detector, Electrochemical (MPN CO710). Key specifications — Sensor Type: Electrochemical; Volume Level: 85 dB @ 10 ft; Battery Size: 3V; Includes: Battery; Brand: FIRST ALERT; Battery Backup [NEW]: No; Form Factor [NEW]: Slim Profile; Test Button: Yes.
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FIRST ALERT Carbon Monoxide Alarm: 10 Year Sealed Battery, CO Detector, Electrochemical (MPN CO710). Key specifications — Sensor Type: Electrochemical; Volume Level: 85 dB @ 10 ft; Battery Size: 3V; Includes: Battery; Brand: FIRST ALERT; Battery Backup [NEW]: No; Form Factor [NEW]: Slim Profile; Test Button: Yes.
FIRST ALERT Carbon Monoxide Alarm: Plug-In, Battery Backup, CO Detector, Electrochemical, Plug-In (MPN CO605B). Key specifications — Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: AA; Alert Type: Sound; Battery Location: Front; Includes: (2) AA Batteries; Brand: FIRST ALERT.
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FIRST ALERT Carbon Monoxide Alarm: Plug-In, Battery Backup, CO Detector, Electrochemical, Plug-In (MPN CO605B). Key specifications — Sensor Type: Electrochemical; Features: Front Loading Battery; Volume Level: 85 dB @ 10 ft; Battery Size: AA; Alert Type: Sound; Battery Location: Front; Includes: (2) AA Batteries; Brand: FIRST ALERT.