The Panasonic VL-WD612 is an intercom with a charger and an easy-to-use operation panel. - Model: VL-WD612 - Brand: Panasonic - Included: Charger Thank you for viewing. This was connected to a home unit and shared via internal lines with telephones, etc., but it is no longer needed as I switched to an intercom-only system. It was working until recently, so I believe it can be used without any problems. There are no instructions or warranty. This would be a good option for those already looking for a replacement of the same model.