Catalog > Consumer Electronics > Security & Alarms > Access Control > Video Doorphones Commax 6 Button Entry Station 6 Button Entry Station CMX DR-6UM Commax DR-6UM 6 Button Entry Station Call for Price Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features 6 Button Wide Name PlateMaterial: AluminumHouse Call and Talk Specifications Power source : DC 12VData Transmission : 3 Wire in Common +1 WireCommunication : Hands-Free TypeDisplay device : LED LightDimension(mm) : 130(W)×315(H)×10(D)Installation Hole Size : 110(W)×284(H)(mm)Fillupbox size(mm): 122(W)×305(H)×37(D)