Panasonic ECE3157 Low-power wireless service call expansion display (simple type) (up to 9 units) Display number cards are available from 9 to 32. Please download the installation instructions and manuals from the website. Stored at home. The box shows signs of aging. No instruction manual is included. Everything in the photos is included. Items not shown in the photos are not available. Please bid only if you understand this. The power connection cable and screws are included as shown in the photos. Returns are not accepted. Please bid only if you understand this.