Nominal values:
10 ms
5 ms
0...7,5ms
at random
t
Figure 11: PTM 200 radio timing
2.3.4 Reliable radio transmission within systems operating many sensors
The very short telegrams of EnOcean transmitters enable the operating of a large number of
senders within the same radio cell; the error rate caused by telegram collisions remains
extremely low. Statistically viewed, the transmission reliability is still greater than 99.99% in
the case of 100 radio sensors that transmit once every minute. This means that even large
office buildings and also huge industrial facilities can be equipped with a large number of
sensors of this kind of radio technology.
Figure 12: Probability of transmission failure caused by radio data collision
for EnOcean light switch transmitter PTM 100
©EnOcean GmbH, A. Anders
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PTM 200 User Manual V1.1
