The DVR-MJ4 has been discontinued and replaced with the iDVR-E4 4ch H264 DVR. The new DVR has H.264 video compression.

The DVR-MJ4 4 channel Security System DVR is an excellent choice for a business or home surveillance system. The DVR comes standard with 500 GB hard drive. This DVR supports 120 FPS (frames per second) recording. The dynamic IP address support allows you to view surveillance over the internet with a cable or DSL connection. Users can access live video from over the Internet from Internet Explorer web browser.  This DVR uses MJPEG Video Compression for maximum image quality.

Video	Format	NTSC / EIA or PAL / CCIR
	Compression	MJPEG
	Input	4 Channel BNC
	Output	1 Channel BNC, 1 Channel S-Video
	Loop-through	4 Ch BNC
Display	Resolution	720x480 (NTSC), 720x576 (PAL)
	Frame Rate	Max. 120 / 100 IPS (NTSC / PAL)
	Division	Single, Quad, Sequence
Recording	Resolution	Max. 640x272 (NTSC), 640x272 (PAL)
	Frame Rate	Max. 120 IPS@CIF / 100 IPS@CIF (NTSC / PAL)
	Quality	High / Low / Normal
	Mode	Manual / Schedule / Alarm / Motion detection
HDD	Basic Storage	1 3.5" IDE HDD (Max. 500GB)
Alarm	Input/ Output	4 / 1
	Triggered Mode	Motion Detection, Video Loss, Sensor Input
	Action	Recording, Relay Output, Sound Alert
Network	Ethernet	10/100 BaseT Ethernet,
	Protocol	TCP/IP, PPPoe, DDNS, SMTP, ICMP, ARP, Internet Explorer Viewing Supported
Post Alarm		0 ~ 60 sec
Backup Device		CF-Card, HDD, VCR
Search Method		By Date, Time, Camera
Power Supply		AC100~240V 50/60 Hz, DC 12V / 5A
Weight		3 Kg (without HDD)
Dimensions (WxHxD)		430x77x305mm
Operation Environment		30 ~ 80% RH, 5°C ~ 45°C (41°F ~ 113°F)