Help to I.D a couple old whites boards.

[godigit1]

I bought these off ebay years ago as old new stock but there was no Referance to the detectors they came from.

Doe's any one recognize these?
Thanks

[Altra]

The first board looks like it could be a 5000A. The second maybe a 6000? See if you can match the parts to these schematics

[godigit1]

Hi Altra,
Sharp eye looks like you nailed it.
on the 5000a a quick glance matches up well. The date code looks like a newer board though 0382 is the code on it .
The 5000d has some different parts but in the right places it is a newer date code than the schematic. 7-83
I do not see the revision on the boards looks like the print is the first revision.

Thanks for your help with this.
Now I can check out the specs for them.

If there is anything specific on these boards anyone would like to see let me know and Ill photo it for you.

Thanks again.