1. Device Commercial Name: JK Audio Innkeeper 4 (Digital Hybrid). Primary Function: A professional digital hybrid device for connecting 4 telephone lines directly to the audio mixer in radio or podcast studios. Key Specifications for Sale: Supports connecting up to 4 analog telephone lines. Digital Echo Cancellation system to ensure audio clarity. LCD screen to display line status and control settings. Balanced XLR ports for audio inputs and outputs. Rack-mount design (suitable for installation in professional equipment racks). 2. Device ⁠image_2.png⁠ Commercial Name: Datavideo SE-2800 (Digital Video Switcher). Primary Function: A professional live production switcher that allows switching between multiple cameras and video sources. Key Specifications for Sale: Supports multiple inputs (usually comes with 8 or 12 channels depending on configuration). Supports High Definition (Full HD 1080i). Includes multiple outputs for HDMI and SDI. Features an integrated audio mixer that is synchronized with the video. Widely used in live events, halls, and educational and professional studios.