| Brand | Viessmann |
|---|---|
| Type | Unit Controller |
| Model | 7745434 Opto2 |
Check the listing for details. Viessmann Vitoconnect 7745434 OPTO 2 Interface Module Brand New. Condition: New – Open box. Listed at 270.00 USD. The Viessmann Vitoconnect 7745434 Opto2 Interface Module is a brand new unit controller designed for use with viessman boilers.
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