
To ensure your safety, it's essential to regularly test your Alecto COA3920 carbon monoxide detector. According to the manufacturer, you should test the sensor and siren at least once a month. The testing procedure is straightforward: simply press the "TEST" button on your Alecto COA3920. You should see the "POWER," "FAULT," and "ALARM" LEDs illuminate. The detector should also emit five beeps within ten seconds, and the red "ALARM" will light up. If you observe these responses, your detector is functioning correctly and ready to alert you to any dangerous carbon monoxide presence in your home. Regular testing is a crucial part of maintaining a safe living environment.


