Recommendation For Best Wireless Communication - Bresser 7003800 Instruction Manual

7009978 1 sensor
Note
:
For air quality sensors pairing, you can assign the sensors in any channel. The console support
to display one channel of each of air quality sensor.

3.4 Recommendation for best wireless communication

Effective wireless communication is susceptible to noise interference in the environment, and
distance and barriers between the sensor transmitter and the console.
1. Electromagnetic interference (EMI) – these may be generated by machinery, appliances,
lighting, dimmers and computers, etc. So please keep your console 1 or 2 meters away from
these items.
2. Radio-frequency interference (RFI) – if you have other devices operating on 868 / 915 / 917
MHz, you might experience communication intermittent. Please re-located your transmitter
or console to avoid signal intermittent problem.
3. Distance. Path loss occurs naturally with distance. This device is rated to 150m (450 feet) by
line of sight (in interference free environment and without barriers). However, typically you will
get 30m (100 feet) maximum in real life installation, which includes passing through barriers.
4. Barriers. Radio signal are blocked by metal barriers such as aluminum cladding. Please
align the sensor array and console to get them in clear line of sight through window if you
have metal cladding.
The table below show a typical level of reduction in signal strength each time the signal passed
through these building materials.
Materials
Glass (untreated)
Wood
Plasterboard / drywall
Brick
Foil insulation
Concrete wall
Aluminum siding
Metal wall
Remarks: RF signal reduction for reference
HCHO with VOC Sensor
Signal strength reduction
10 ~ 20%
10 ~ 30%
20 ~ 40%
30 ~ 50%
60 ~ 70%
80 ~ 90%
100%
100%
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