Offered in 4-, 9-, and 16-channel model configurations, the DHT Series Network Digital Video Recorder features an optional 3.5-inch LCD display built into the front control panel, a USB interface for copying images to flash memory, MJPEG video compression, two hard drives for up to 600 GB of data storage, and a handheld remote controller. The DHY Series DVRs, available with 4, 8, and 16 channels, are Web and network ready and come with a DVD-RW, advanced motion detection, system auto recovery, covert screen capacity, up to 500GB of storage, alarm recording functions, and four channels of audio. Multiple viewers can simultaneously view the feed over the Internet and alarms can trigger notification to designated e-mail addresses.