?This is 2.4Ghz 4-Channel Wireless Network DVR with 4 Wireless Security Cameras. With our Monitoring System software£¬ you can capture the image and video you are watching£¬ and play back the data recorded. It can also be used as a regular receiver to convert the Video &amp; Audio signals to normal monitor / TV. This security kit also contain 4 high quality cameras. You can enjoy its capability for entertainment£¬ monitoring and security purposes.                                    Features            Seeing and recording 4 pictures at the same time on PCConnect PC via USB to be a super net work DVR30pcs LED for 20m night vision100M transmission distance without blockWeatherproof camera can work by wired &amp; wirelessMPEG4 compression format£¬ greatly reduce HDD usageRemote surveillance and control via internetMotion detection recording and alarmSupport advanced search modeSupport alarm pre-recordSupport buzzer£¬ email alarm outUser-friendly graphical user interfaceUsers managementMulti-channel displayImage color adjustable for each channelSupport for multiple languages(including Chinese£¬ English£¬ Germany£¬ Spanish£¬ Portuguese and other languages)                                                            Specifications            Receiver:Receiving Frequency    2.400GHz~2.483GHz    <br>Frequency Tune    PLL    <br>Receiving Sensitivity    -85dbm    <br>Video Output    75¦¸ / 1Vp-p    <br>Audio Output    70k¦¸ / 500mVp-p    <br>Video System    PAL / NTSC / SECAM Compatible    <br>Validity Distance    150m (open area)    <br>Auto Switch Output    Windows default is switch once every 5 seconds    <br>Power Adapter    Input: 100-240V£¬ 50/60Hz; <br>Output: 5V£¬ 1.5A    <br>Power Consumption    &lt;8W    <br>Dimensions    8.15" x 4.49" x 1.57"/ 20.7 x 11.4 x 4cm    <br>Camera:Imaging Device    1/3" CMOS Image sensor    <br>Horizontal Definition    380 Lines    <br>Transmitting Frequency    2.400GHz ~ 2.483GHz    <br>Pixels    510 x 492    <br>TV System    NTSC    <br>Validity Distance    150m (open area)    <br>Working Temperation    -10¡æ ~ 50¡æ    <br>Night Vision Distance    10M    <br>Dimension    1.81" x 3.94" / 4.6 x 10cm (Dia. x H)    <br>                                                            Package Includes            1 x Receiver <br>4 x Camera<br>5 x AV Cable<br>1 x USB Cable<br>5 x Power Adapter<br>1 x CD Driver<br>1 x User Manual<br>