Reliable and professional wholesale china phone and phone accessories by totobay with verisign to protect your online shopping information data.
DVR cards are very important to surveillance DVR. there are some DVR cards for you,DAHUA DVR compression card, HiKvision DVR card, hengding DVR card, etc. DVR card also has english version and chinese version. the DVR card can provide different channels and dual-stream encoding. DVR video card use H.264 hardware compression algorithm to achieve high compression ratio and excellent image quality. DVR cards support OSD or LOGO overlay, Privacy masking, Frame rate and Bit rate dynamically adjusted etc.
DVR cards are compatible with full range of compression card. DVR video cards provide full SDK with windows and linux operation system. its video detection supports motion detection, video loss and video block. the HiKvision H.264 4CH DVR Card comply with PCI 2.2 standdard,supporting up to 64 audio or video channels with one PC. this DVR card supports variable bit or frame rate, OSD, LOGO, MASK overlay, watermark technology and dual encoding. DVR card has real-time video and audio compression without frame lost. buy wholesale surveillance DVR card from china.