DVR Security System Review

The EV804 has been created by Sora Inc and it is an 8 channel DVR, accessories such as security cameras, a monitor and software are included with this system. The DVR has 8 BNC inputs attaching the surveillance cameras and for video output it has an S-Video output and a VGA output. The DVR used M-JPEG video compression and has a maximum recording rate of 120 frames per second. When recording in NTSC with the DVR its maximum image resolution is 720*240 and when set to record in PAL the maximum image resolution is 720*288.

There are numerous ways to set the DVR to record surveillance camera footage, if required you can set the system to record twenty four hours a day. To avoid recording video with no notable activity you can set specific times when the DVR will start and stop recording. You can also set the DVR to record only at times when activity has been picked up by its adjustable motion sensor feature. Alternatively you can attach external alarms to one of its 8 alarm inputs and when these are activated the DVR will start recording.

A Linux based operating system is embedded in the DVR that you use to control and adjust the systems features. An Ethernet port is fitted to the DVR so that you can connect it to a LAN or broadband router for the purpose of controlling and monitoring the system remotely. Software also comes with the package that you can install on a Windows PC, this gives you the option to transfer images recorded by the DVR to the computers hard drive. Another way to transfer footage recorded by the DVR to your PC is to plug a memory stick into the USB port fitted to the DVR.

A 160 GB hard drive is fitted to the system and you can upgrade this to a maximum of 800 GB, the system can also accommodate an external hard drive. A 17 inch monitor is included with the system and you can give each camera attached to the DVR a specific name, the name you specify is displayed on the monitor when you are viewing the camera feed. The monitor included with the system is an LCD flat panel TFT that has a maximum display resolution of 1280*1024. Four of the eight surveillance cameras are bullet cameras, these are fitted with a 1/3 inch Sony Super HAD CCD image sensor.

The bullet cameras have 25 infra red LED’s and are better suited for outdoor use as they are weatherproof and can record video footage in the dark. The remaining four cameras included with the EV804 are dome cameras, these have exactly the same image sensor as the systems bullet cameras. Although the system has 8 audio inputs it only has 1 audio output so you can only set up two way audio for one attached camera . The system does include RS-232 and RS422 ports and its also comes with the cabling necessary for setting up the surveillance cameras.

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