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This wireless camera and monitor like others of its kind uses the 2.4GHz frequency range for transmission and receiving. There can be a few problems for systems that use this range. One is that this is the same frequency range that wireless computer networks use so there can be interference. And second, if the devices are analog, other devices in that range may be able to intercept the signal. So people nearby may be able to see what's happening by your camera

The 4-Channel Wireless Video Security Monitor solves that problem not only by using a digital signal, but by using FHSS technology (Frequency Hopping Spread Spectrum). Essentially that means your camera's signal is chopped up into tiny segments, or packets, and distributed over a wide band of frequencies in the 2.4GHz range. Since transmission occurs only on a minuscule section of these frequencies at any given time, the signal being transmitted does not suffer from greatly reduced signal degradation and also avoids blocked paths and other devices with competing signals. Also, the strength of the signal being transmitted is much higher then the a comparative analog transmission signal allowed by wireless authorities around the globe.

Using FHSS requires the camera and receiver to be "paired." This means that even if your neighbor has the identical monitor, he or she cannot see what's happening on your camera. When you purchase the system, the devices are already paired, but if you add cameras, you will have to go through the pairing procedure before they will work with your monitor.

How far the camera will transmit depends on a number of factors like type of solid objects the signal will pass through such as walls and doors, plus any other interference encountered. In ideal circumstances, this wireless camera could transmit a video signal up to 450 feet. Your range will likely be lower

Here are some of the best features of this video system:

SCAN Button – When the Scan button is pressed, the LCD Screen is turned off and the system continuously scans all available cameras while the monitor is dark.

The SCAN feature can be used for the following two reasons:

1. To prevent the user from being disturbed by the bright LCD screen (i.e. when sleeping).
2. To conserve battery power. If audio is detected above the preset audio trigger level on the camera(s), the Receiver will beep and display the triggered camera. The camera receiver will return to Scan mode several seconds after the Alarm has completed.

Camera Night Light – The camera has a night light that can be turned on to light up the area around the camera.

Monitor Night Light Button – The monitor has a button that lets you turn on the camera night light on from your remote application. If you use this as a baby monitor you may be able to calm your baby down by turning the light on (the button works for the camera currently being displayed on the LCD Screen).

Alarm +/- Button – You can press this button increase or decrease the sensitivity of the audio alarm.

Receiver A/V Out Port (Optional Use) – Connect the included A/V Cable to view video from the receiver on a TV or Monitor, or record to a DVD Recorder or VCR. Alternatively, use the A/V Out port on the Receiver Cradle.

Receiver Cradle A/V Out Port – Connect the included A/V Cable to view the receiver picture (when docked) on a TV or Monitor, or record to a DVD Recorder or VCR. (NOTE: The power cable needs to be connected for this feature to work. Only one A/V out port should be used at a time).

Camera Sound Alarm Trigger – Adjust the Trigger to set the Sound Alarm sensitivity. The Receiver will beep to alert the user when the sound is above a preset sound level. Adjust the side wheel to Increase or Decrease the level.

Night Vision  – This camera has built-in IR LEDs, which provides the camera with the ability to view images in no/low light conditions.