Features "◆Ntelligent security DVR, opening as using do not need any operations and maintenances. ◆Built-in motion-detect system, auto detect motion in monitoring area, auto take photo or record. ◆Easy operating OSD menu, looking for the videos through the menu quickly and managing the storage datas inside. ◆Support 2G SD card max , also can keep the storage datas permanently when power down. ◆Adopt SD Card Recording technology, datas can be copied to PC, Laser Disk and other storage Media at ease. ◆Standard PAL/NTSC TV video output for monitoring and playing back. ◆Provide recording and snaping two kinds of working models for your choice to the proper situation. ◆Supporting cyclic recoding and normal recording model. ◆Energy-saving design for portable using. ◆Support wireless monitoring. ◆Support remote control function. " Model WS-200 WS-210 Picture Video System PAL/NTSC PAL/NTSC Operating Voltage 5V DC+ 5V DC+ Operating Currency 600mA 600mA Video input receiving 4CH wireless cameras signal receiving 2CH wired cameras signal receiving Mode wireless wired Operating Temperature -10℃~50℃ -10℃~50℃ Operating Humidity 20%~80% 20%~80% Output impedance 75Ω 75Ω Output level 1Vp-p 1Vp-p Storage Media SD card SD card Capacity 32M~2G(1G~2Grecommended) 32M~2G(1G~2G recommended) Recording time No limit,Cyclic recording Normal Recording Model(single-cycle): A 2G SD Card can Recorde: 1-4 days Under Shooting Model: A 2G SD Card Can keep images: 15 days. A 2G SD Card Can keep images: 15 days.