Questions and Answers for Kidde Firex Smoke & Carbon Monoxide Detector, Battery Operated with Front Load Battery Door and Voice Alarm

A:  Hello. Yes, the The 900-CUDR-V is battery only and does not hardwire. You will either want the 900-CUAR-V model 21032082 or the 900-CUAR model 21032251 without the voice.

A:  Hello. If you have a flat ceiling then the alarm can be placed on the wall within a foot of the ceiling.

A:  Thanks for the response that it would fit (which it did). But the screw placement holes of this model's bracket (3") were too narrow for my old one (3.25").

A:  I bought this model (900-CUDR-V) anyway and tried using it with my original KN-COPE-D (CP9000) bracket (still screwed to the wall), and it fit perfectly. A tad tight (as you said) but easily removable for battery change nevertheless.

A:  Hello. It is not designed to be, no. We have made it work in practice by pushing this new alarm firmly against the bracket and turning but it is not easy. Best is to replace the bracket but changing the bracket takes a screwdriver and a ladder. The placement of the screws will be the same.

A:  Hello. Yes, this will fit on the bracket of the KN-COSM-XTR-B.

A:  Hello. Yes, it will fit on the same mounting bracket.

A:  Hello. It depends. If there is enough smoke to fill up the ceiling with smoke down to the level of the alarm and smoke pours into the back side edges of the alarm and fills up the smoke chamber, it could. If you smoke, you will want to clean out the alarms every 6 months or more often to get debris from smoking out of the alarm. Usually vacuuming out the alarm around the back side edges very thoroughly with the hose attachment of a vacuum cleaner or blowing out the alarm with a can of compressed air like keyboard cleaner around the back side edges very thoroughly should flush out any debris.

A:  Hello. No, these alarms are not wireless and do not interconnect. You will want the wire free alarm P4010DCSCO-W model 21028747

A:  Hello. This alarm is not hardwired. You would want the alarm KN-COSM-BA model 21029509