--- title: "R4 (4-Channel)" slug: "r4" updated: 2025-09-26T03:39:37Z published: 2025-09-12T10:22:26Z canonical: "knowledge.akuvox.com/r4" --- > ## Documentation Index > Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt > Use this file to discover all available pages before exploring further. # R4 (4-Channel) ![](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/R4_01.png)