Carbon Monoxide detector should be tested at least once per week during use.
For carbon monoxide (CO) detectors, press the test button to check the electronics. To test the sensor’s ability to detect CO, use a can of carbon dioxide or a dedicated CO testing can, as recommended by some manufacturers. Do not attempt to generate CO for testing, as this is dangerous. Test the CO detector after each storage period, before each trip, and at least once per week during use.
Always test all detectors after a storage period, before each trip, and at least once per week during use. If the detector fails a test or shows signs of malfunction, such as a persistent alarm that won’t clear, check the battery or replace the unit. Remember that the test button only verifies the electronics, not the sensor’s ability to detect gas, so physical testing with gas or smoke is essential.