Signal Reduction Through Materials

Appendix C: Facts About Digital Wireless Cameras

Signal strength decreases as it passes through different types of material. Try to position your wireless camera and receiver in a location that does not pass through metal, or concrete blocks, which can significantly reduce signal strength (as shown in the table below).

Material	Signal Reduction (%)

Plaster & Wood	10 - 30%

Brick	30 - 50%

Concrete Cinder Blocks	50 - 70%

Metal & Metal Cladding	70 - 90%

NOTE: Signals that must pass through wet or moist materials (i.e. shrubs and trees) may be significantly reduced.

The stronger the signal strength, the higher the video frame rate. The lower the signal strength, the lower the video frame rate.

Low signal strength

Fullsignalstrength

(low frame rate)

(high frame rate)

Are Digital Wireless Camera Signals Secure?

Yes. Lorex digital wireless products feature a wireless transmission method called FHSS –Frequency Hopping Spread Spectrum.

This type of signal is highly resistant to eavesdropping as it generates a channel hopping sequence using an algorithm generated by the receiver, which only the camera can follow through the "pairing" function. FHSS makes digital wireless signals secure, private, and interference free.

How many frames per second should I expect from a digital wireless camera?

Current Lorex digital wireless cameras offer 10 - 30 FPS (Frames Per Second) performance. Actual frame rate depends mainly on signal strength and resolution (see the chart above). Most digital wireless cameras support one or both of the following resolutions: QVGA, and VGA.

QVGA produces video at up to 30 FPS at 320x240 resolution.

VGA produces video at up to 10-12 FPS at 640x480 resolution.

How many wireless cameras can I install?

It is recommended to install a maximum of 4 (four) wireless cameras per system.