FirstAlert SC7010B to X-Sense SC07-MR Adapter

Why?

Did you upgrade your old First Alert Smoke Alarms to X-Sense? Why bother unscrewing the old fire/smoke alarm adapter bases, to have to re-screw the new adapter bases, with holes that don't line up!

But how hard, you ask, is it to unscrew the old adapter bases and screw in the new (that came with the new smoke alarms/detectors)? Well, depending on your original gang box (plastic hardwired electrical box), the screws for the new adapter base would line up outside that box, and require screwing into sheetrock (in USA), which would require anchors. Anchors require sheetrock material to work well and not spin, which, if they fall on the edge of the sheetrock, CAN spin and rip out the paper backing and chalky material, leaving you stranded and unable to use the new adapter. Worse case (like me) your detectors are on the ceiling, which requires 100% screw support so the detector doesn't fall off. Not to mention, un-screwing and re-screwing sometimes takes long ladders, time, and patience. THIS case is where an adapter like this will make it easy. And at 40-50g per adapter (~1$ in US), is a small price to pay for the convenience of swapping out smoke alarms/detectors quickly. 

What?

This Twist-Lock adapter adapts your old First Alert SC7010B Fire/Smoke/CO Alarm Base to your new X-Sense SC07-MR Smart Fire/Smoke/CO Alarm. Simply untwist the old alarm, unplug it from the hardwire (if equipped). Twist on the new adapter, and twist on the new X-Sense Alarm onto the Adapter. Done! 

Print Settings

This model is optimized for FDM printing. It can be printed in PLA or your filament of choice. No need to go wild here. 3 walls recommended. A 0.6 nozzle will allow you to print ~1 per hour, maybe 1.5 hours w/ A1 Mini. Model is 40-50g depending on Nozzle Size and layer height. 15% gyroid infill is fine. 0.2-0.3 layer height works. Model is printed at 45 degrees due to difficulty removing supports in the narrow slots that twist into the old First Alert base, when it is printed flat. At 45 deg it requires minimal supports and even if it isn't pretty, it's still functional. Fortunately you can buy many shades of PLA to match your ceiling and smoke alarm color. 
 

Video of assembly
https://www.instagram.com/reel/DQk84gODW47/?igsh=OTV0ejYxcnFzeHVu