Four 720P cameras included, clearer and more stable: one dome camera to monitor front drive/driver; two side view waterproof cameras to monitor left/right rear blind zone; one rear view waterproof camera to monitor rear discharge or reverse blind zone.
Notice: Please remember to lock the SD card slot with the key after insert the card. If not, the DVR will shut down automatically. Connect the Red and Yellow power cord to the positive electrode, and the Black power cord to the negative electrode. please test the voltage to see if it's between 8V-36V.