No was different. I dont remember the brand now. The system I remember was with little grey blocks 5mm x 20mm x 10mm, with the pins on one of the thin edges. The pins plugged into connectors that were soldered onto a circuit board. Worst time I had to try and fix one of these systems were when there was a hairline crack in one of the copper circuits on the circuit board. Intermittent error that only showed up at certain temperatures. And it was near impossible to get access to measure anything. And of course the logic was inverted (signal high = off), but that was the least inconvenience.
was it 'Norlog'