Dude fire alarms are very sensative. Me and my friends stayed at a hotel and they thought it would be fine to light up in the bathroom with the fan on. After a couple hits the fire alarm went off. We fanned it for a really long time to get it to stop though. What we did is pull the face part off and there's like a couple wires behind it. Disconnect the wires and the battery and put the face part back on.