Gentex GN-503F Smoke & Carbon Monoxide Alarm, 120V Hardwired Interconnectable Photoelectric w/9V Battery Backup, T3 & T4 Horns & Form A/C Relay Contacts (918-0007-002)

treadmill detectors every month process button however testing your smoke detector once a month or even once a week isn't enough clearly in this next picture you'll see that 14 years ago in 2005 this smoke detector should have been replaced so we're gonna go ahead and do that replacing a smoke detector is rather simple I'm going to have my four year old help Mary how old are you so Mary why don't you twist counterclockwise to detach the smoke detector from the base he's job Mary thanks for helping now let's get up close and take a look once the smoke detector is separated from the base you will need to remove the wire harness just go ahead and tug gently to remove the wire harness now that they are separated validate what type of wire harness you have but we can also review this later see that there's two screws up here we are going to have to undo those to remove the base from the ceil