What is UL 2034 4th Edition for Carbon Monoxide Alarm

Carbon Monoxide Alarm UL 2034 4^th Edition : Why It Is Important

The newest carbon monoxide alarm UL2034 4^th edition standard is deemed effective by May 2021. This is the latest revision since 2015 3^rd edition, as recommended by US Consumer Product Safety Commission. All CO alarms on the retail markets should incorporate these new standard changes, approved by a third-party testing lab such as UL or Intertek.

Some of the main changes include:

Battery trouble silence
Conditionings
Impact test
Transient tests
Hazardous voltage tests
Surge & current tests
Jarring test
Normal operation tests
Pre-alarm system requirement
Battery requirement
Alarm reset/silence requirement
End of life EOL signal testing

If the product for market is deemed not applicable to above requirement, information should be added to the approval such as markings, instructions, etc.

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