The 4ch NVR kit includes one piece of 1080P NVR and four pieces of wifi bullet cameras. Due to the waterproof and weatherproof functions, it is very suitable to install outdoor or indoor. Without cable, it is very easy to install for most of people to install. Clear pictures and 4 HD cameras can meet all of the requirements in daily life. This surveillance system has the night vision function. Even in the dark night, you can see it very clearly. It is very suitable for villa, home, office, store, warehouse, or anywhere.