JUMO 902931 Wtrans Receiver with Wireless Data Transmission Operating Manual - Manual (Page 16)

3 Basic principles
16
3.4 Interference
Collisions when using too many transmitters
When using a large number of transmitters, do not select a transmission interval that is too low,
as otherwise the transmission frequency will be occupied unnecessarily. A transmission inter-
val that is too low leads to a very high data volume on the selected frequency, which can lead
to collisions with other transmitters. The collision can cause telegrams to be destroyed during
wireless transmission.
Figure 4: The telegrams of a transmitter reach the receiver without collisions.
Figure 5: Telegrams from several transmitters may collide.