Documentation page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/35127335/VT440+Dry+contacts+unit
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The number of dry contacts inside VT440 can be increased up to 64 with an extension module "VT32 / dry contacts module".
Physical description
1. "1...32" - Dry contacts terminal.
2. "33...64" - Dry contacts empty slot. VT32 / Dry contacts board is ordered separately.
3. "S/N" - serial number. You will need this serial number if you want to contact our support team. It is important that you do not lose it!
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