Product introduction
Fermator Elevator door controller door inverter VVVF4+，This product is divided into two Schindler models and general models，The general model has been discontinued and can be replaced by VF5+，Does not affect the use, while providing technical support.
Product parameter (specification)
| Type | Elevator parts |
| Category | Elevator door controller |
| Brand | Fermator |
| Model | VVVF4+ |
| Applicable | Schindler and General |
| Warranty Time | 1 year |
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