Replace antique smoke alarm

I need to replace the Il-930. Three-prong, gorizontal in-line. Best bet? Adaptor necessary?

Do you have any pictures of the detector?

Also, if you have more than one of these installed you might as well just upgrade them all now. Then you won’t have to deal with potential wiring problems.

Residential smoke alarms of different brands use different method of setting each other off when one detects smoke. Therefore, and a lot of people do not know this, mixing up different brands can cause random false alarms to occur.

Kidde sells adaptors to connect to older BRK/FirstAlert products. Will the false alarms still occur if it is used, or does the circuit board change BRK’s method into Kidde’s method to prevent it?

I have deleted the argument posts about whether electronicwiz101’s post is off-topic or not.
Technically it is partially off topic but it is related to the topic though as it is an issue that could come up in a smoke alarm replacement.

All the adapter does is changes the arrangement of the pins so that a non-Kidde alarm can plug into a Kidde alarm without rewiring. There’s no circuitry to adapt the protocol as that could violate patents, mess things up, and all kinds of other issues. Besides, companies want to make more money so by forcing you to replace all the detectors with the same brand, they make more money, right?

Finally, I’m going to close this topic as this was posted over a month ago and the OP has not replied.