Great for investigative and surveillance operations, or as nanny cameras, these cameras can vary in price, depending on the level of sophistication you prefer. Wireless spy cameras are great if you require surveillance from far away.
The transmitter is embedded in the camera, while the receiver is attached to the recorder or monitor. The transmitter transmits at a fixed, standard frequency. There are a couple of frequencies in which these transmitters operate. While the frequency does not in any way affect performance, you should ensure that no other equipment is operating in the same frequency in the vicinity to avoid interference.
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