Jovision is one of leading specialized DVR card manufacturers in China and we have been in this line of business for many years. From Jovision JVS-C601 series DVR card available with more camera access, to Jovision JVS-C801 series DVR card with real-time display and high image quality, as well as our cost effective JVS-C692 series DVR card, we can provide to you a complete range of security solutions for your PC-based DVR systems.