User Manual

ZE51/61-2.4 RF module User Guide
1VV0300868 Rev.4 – 31/03/2011
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Wireless notice
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following
two conditions: (1) this device may not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2)
l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en
compromettre le fonctionnement.
Label recommendations
If neither FCC ID nor IC ID is visible when the module is installed inside another device, then the outside of the
device into which the module is installed will display a label referring to the enclosed module by labelling the host
device in this manner: “Contains FCC ID: RI7ZE51 and IC ID: 5131A -ZE51”
VIII.3. Examples of propagation attenuation
Factor
433 MHz 868 MHz 2.4 GHz
Attenuation Attenuation Attenuation
Open office 0 dB 0 dB 0 dB
Window < 1 dB 1 – 2 dB 3 dB
Thin wall (plaster) 3 dB 3 – 4 dB 5 – 8 dB
Medium wall (wood) 4 – 6 dB 5 – 8 dB 10 – 12 dB
Thick wall (concrete) 5 – 8 dB 9 – 11 dB 15 – 20 dB
Armoured wall (reinforced concrete) 10 – 12 dB 12 – 15 dB 20 – 25 dB
Floor or ceiling 5 – 8 dB 9 – 11 dB 15 – 20 dB
Armoured floor or ceiling 10 – 12 dB 12 – 15 dB 20 – 25 dB
Rain and/or Fog 20 – 25 dB 25 – 30 dB ?? *
* = Attenuations increase along with the frequency. In some cases, it
is therefore difficult to determine loss and attenuation value.
Note = The table above is only indicative. The real values will depend on
the installation environment itself.