Press and hold the test/reset button for 10 seconds to fully.

How to change battery in first alert smoke and carbon monoxide detector. So, firstly use a plastic tab to open the battery lid gently. Remove the alarm from your ceiling or wall. Replace the batteries at least once every year.

Replace the entire smoke alarm every 10 years. The green light flashes about every 60 seconds when the unit is receiving battery power. If your smoke alarm is chirping even though it has a new battery, try these troubleshooting steps to clear out residual charge from the old battery.

Once you’ve replaced the batteries, close or lock the lid depending on your smoke detector type, you might have to snap the outer cover back into its place or. It is recommended you test your alarms at least once a month to ensure they are working properly, and replace the batteries every six months, while the detector itself should be. The first step is to open the package.

How to replace a 9v battery. Now take the old batteries out. Use the plastic tab to gently open the battery compartment.

Remove the motherboard and battery cover. Using flat screw drivers, pull apart the four tabs on the smoke detector. Attach the smoke/co alarm to the mounting bracket.

Co gas is colorless, tasteless and odorless, and a detector is needed to test ppm (parts per million) and alert you to unsafe levels. Resetting your first alert carbon monoxide detector. Line up the guides on the alarm’s.