Defender 4K Manuals, Firmware & Quick Start Guides Manuals Defender 4K - User Manual Defender 4K - 24/7 Mobile App Manual Guides Defender 4k - Quick Start Guide Related articles Defender HD Manuals, Firmware & Quick Start Guides Defender 4K | How to Setup the Defender 24-7 App with Defender 4K Defender 4K | How to Setup and Activate the Defender 4K (8MP) DVR Security System Defender Guard - Manuals, Firmware & Quick Start Guides How to Setup and Activate the Defender 4K (8MP) DVR Security System