Radio network - WaveNet
You can use WaveNet to wirelessly transfer authorisations, status changes, protection functions and other data.
WaveNet's state-of-the-art wireless technologies have to meet different expectations than standard wireless networks.
Since 2000, a special SRD band (short range device) in the 868 MHz range has been available for this area. This SRD band is divided into several sub-bands (you can select the sub-band, see Adding a Radio channel and Add RouterNode to WaveNet).
Separate frequency ranges are reserved for safety applications. In addition, WaveNet devices transmit on the basis of the "listen before talk" principle, which means that a check is performed before transmission to see whether communication is currently in progress on the channel set. If communication is in progress, the WaveNet devices will not transmit until communication is complete.
WaveNet therefore offers you a secure transmission path in the 868 MHz range.
Like all wireless networks, WaveNet is influenced by device and environmental characteristics:
- Transmitting capacity
- Antennas (size, orientation)
- (Unauthorised) modification of the WaveNet devices
- Receiver sensitivity
- Transmission frequency
- Environmental influences (humidity, temperature, electromagnetic interference sources)
- Structural conditions (walls, ceilings, etc. See table)
- Installation site (change in environmental conditions, see also Product-specific safety instructions)
- Network utilisation by co-users of the radio frequencies
- Random or deliberate interference
- Unauthorised use of spectrum by other devices
- Electromagnetic fields (for example from switching power supplies)
- Jammers
These influences can interfere or hinder the transmission. You recognise this by:
- poor RSSI (Received Signal Strength) values
- slow or failed data transmission
- reduced range
The WaveNet is also influenced by:
- power failure in a (sub) range
- Failure of a transmission path in an external network (e.g. Ethernet connection)