If the COA-26 indicates END, it means that the sensor is at the end of its lifespan.
The CO Alarm must be replaced to ensure your continued safety.
We recommend purchasing a CO Alarm directly from us for the best support.
You can purchase a new carbon monoxide detector via the following link: Alecto carbon monoxide detectors
If you would like some advice, we can always help you with that. You can send us a message by clicking on 'contact us'.