In today's digital world, wireless technology has made its way into an array of devices and gadgets, including surveillance cameras. The biggest problem with wireless devices is interference, which causes weak or no signals at all. This is because most wireless devices use the same frequencies to transmit their signals, usually 2.4 GHz. A cordless telephone, bluetooth device, and internet router could all interfere with the wireless signals that are transmitted between the surveillance camera and the receiving monitor or DVR. The best way to fix this interference problem is to check if any of the wireless devices could be set up to operate on a different frequency band, such as 5 GHz.