. About this item [13 inch HD monitor] The NVR itself is a 13-inch HD monitor that also functions as a receiver. All you have to do is connect all your devices to one power source and the screen will appear clearly. If you want to use your own monitor, you can also connect it with an HDMI cable. [24/7 Uninterrupted Recording] The 1TB hard drive built into the monitor allows the entire system to record uninterrupted 24 hours a day. And you can play the video at any time, so you never miss a moment. [Easy Installation] The installation of this surveillance camera set is very easy and all cameras are factory linked to the NVR. So you just need to connect the power and monitor and you will have a clear picture. The base of the camera comes with self-adhesive film, so you don't even have to punch holes in the wall to attach the camera to the wall. [Built-in Microphone] The ANRAN security camera has a built-in microphone on the front of the camera. This allows clearer sound recording. Not only will you be able to see what is happening, but you will be able to hear it. [Waterproof Surveillance Camera] The IP66 waterproof surveillance camera can be used in various outdoor environments. The cameras can be used in a temperature range from -20°C to 50°C. betrieben werden, so dass sie auch bei extremer Hitze oder Schnee gut funktionieren.About this item [13 inch HD monitor] The NVR itself is a 13-inch HD monitor that also functions as a receiver. All you have to do is connect all your devices to one power source and the screen will appear clearly. If you want to use your own monitor, you can also connect it with an HDMI cable. [24/7 Uninterrupted Recording] The 1TB hard drive built into the monitor allows the entire system to record uninterrupted 24 hours a day. And you can play the video at any time, so you never miss a moment. [Easy Installation] The installation of this surveillance camera set is very easy and all cameras are factory linked to the NVR. So you just need to connect the power and monitor and you will have a clear picture. The base of the camera comes with self-adhesive film, so you don't even have to punch holes in the wall to attach the camera to the wall. [Built-in Microphone] The ANRAN security camera has a built-in microphone on the front of the camera. This allows clearer sound recording. Not only will you be able to see what is happening, but you will be able to hear it. [Waterproof Surveillance Camera] The IP66 waterproof surveillance camera can be used in various outdoor environments. The cameras can be used in a temperature range from -20°C to 50°C. betrieben werden, so dass sie auch bei extremer Hitze oder Schnee gut funktionieren.