20 Most Recent First Alert SC9120B Smoke / CO Detector with Battery Backup & Strobe Questions & Answers

Hi hislop_amand, I know this is coming to you late yet I just seen your post and hope the following can still help you or others. Kind Regards, SD FIRST ALERT Model: 9120 9120B

Normal Operation (AC Power) Green LED ON; flashing Red LED once/ minute No Audible Alarm Normal Operation (DC Power - 9120B only) Green LED OFF; Red LED flashes once/minute No Audible Alarm

Mine is doing same thing after 2 hrs. I tried 3 new batteries and still having problem so I hope someone has an answer as to what is causing this. Thanks.

Yes. As long as it is closed, its contents are protected from fire and water. The Underwriters Laboratories (UL) has certified the 2037F to withstand temperatures of up to 1,550 degrees for half an hour. To know more details about this product you may visit here : First Alert 2037F Fire and Water File Chest Review Here you can acquire more helpful knowledge.

Some models allow replacement of batteries, and a default combination number. Example: https://manualzz.com/doc/3151997/first-alert-19-cu.-ft.-gun-safe--user-s-manual

I can open any safe with no damage. Let me at it sobi dont have to find others with no permission lol

https://www.firstalertstore.com/store/images/pdf/First-Alert-2092F-BD-Manual.pdf Page 7 of manual above shows how to get them.

notify first alert or a lock smith

https://www.firstalertstore.com/store/images/pdf/First-Alert-2118DF-Manual.pdf

here is the manual https://www.firstalertstore.com/store/images/pdf/First-Alert-2118DF-Manual.pdf

Have a look on you tube

Although I'm sure your a legitimate owner, there is a way to open these without the combination that's non destructive, I can't describe here in the open forum, you can google the solution, or call a lock smith, they probably use the same method and if they are nice,they might tell you over the phone. Otherwise because the serial# says nothing about the legal ownership. I cannot in good faith help in this situation. Good luck.