Panasonic Doorphone This is a mounting base for the exterior unit of the doorphone. Doorphone Surface Mount Case [Model Number] PFKU1001 VL-SE35KL, VL-SE35XL, VL-ME35K, VL-MZ35X, VL-V523L-N, VL-522L-S, VL-V522L-WS #vl-v566 #vl-v500