https://www.systerra.de/VME-1111.html
abaco systems VME-1111 is a high-voltage differential digital input VMEbus board. The common-mode input voltage range is -30...+66 V ...
https://www.systerra.de/VME-1129.html
The abaco VMIVME-1129 Digital Input Board is designed to read a voltage from a variety of devices. The signals may originate from electronic switching circuits, standard logic circuits, mechanical switch contacts ...
VME-1182A Datasheet (PDF)
https://www.systerra.de/downloads.php?dokument=5547