【Aiphone One-Touch Door Phone】 * Main unit x 1 (IE-2AT AK) * Additional main unit x 2 (IEH-1C AK) * Entrance unit x 1 (IF-DA AK) This was purchased new and used in a detached house. It was replaced due to a change in functionality, not a malfunction. It was working normally before removal, so it can be used as is. Calling and conversations are possible between each main unit. There is some yellowing due to aging, but there are no cracks, and small items other than screws are included, so it can be installed as is if you prepare screws. (Wiring is, of course, required.) Please bid only if you understand this.