Help ID "Philips Remote alarm"

[12vdc]

I bought this in 1985, anyone know what it was for or part of?
(it has a panel it mounts to that is for a rack mount tower)
8" W x 4" H x10" D
rear trim pot "Rate PPM"

Thanks

 

[ramussons]

Whats at the rear? Terminals ? Markings ?
It maybe a system to trigger an alarm when a Normally Open contact Makes or Vice Versa.
Can you trace the schematic?

 

[12vdc]

There are 3 trim pots on the rear.
1 is time delay (guessing how long sensor must be in a closed state before sounding alarm)
2 is the above mentioned PPM (parts per million?) SENSITIVITY LEVEL?
and 3rd is alarm volume.

There is a barrier strip with 4 contacts if i short 2 of them the alarm sounds.
and lastly a power connection (115V AC)

I am not concerned on how it works or what it does(obvious at this point) but what it was part of.
(Medical, space program, fire monitoring or power generation etc.....)

 

[BobK]

PPM makes it sound like some kind of gas (CO for example) alarm.

Bob

 

[Bluejets]

A quick google showed Philips built medical equipment in Canada so perhaps a call to them?

 

[12vdc]

Just curious whether it has any value. Trying to "clean" my shop