... External connecter,USB,SD Card, power interface Power supply,3.6V-5V,100MA Power consumption, Data Transmit < 5mA, Data memory < 83mA,Stand ... ADPCM video/audio output TF/SD card memory: support 8G maximum TF\SD. 2. Auto circulatory video record: 2G SD Memory ,2 days monitor video ... can read the contents inside. 8.The scene replay , TF\SD card scene replay 9.Protection function when power failure, Stable ...