Want to see and hear everything outside your home or business at all times without the presence of wires? Then the WSE201 system is for you. The small but powerful bullethole camera is wireless and features automatic night vision (CDS sensor). As soon as it gets dark the infrared LEDs will activate and provide you with a clear view of everything, even in complete darkness! Plus, this camera has a built-in microphone, so you won't miss a thing.The camera sends video wirelessly to the receiver, which can be connected to a TV, VCR, or DVR for viewing and recording purposes. Two additional cameras can be connected to this system, and you can set the receiver to cycle through each one. This system is ideal for monitoring your children playing outside, or for preventing theft and vandalism outside your home or business. The camera is constructed with aluminum casing for ultra durability.