USER MANUAL
STM 550 / EMSI
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ENOCEAN MULTISENSOR FOR IOT APPLICATIONS
© 2020 EnOcean | www.enocean.com F-710-017, V1.0
STM 550 / EMSI User Manual | v1.3 | September 2020 | Page 22/97
3.3
Temperature sensor
STM 550 integrates a high-performance temperature sensor achieving accuracy of better
than +-0.3 °C throughout the entire operation temperature range and an accuracy of better
than +-0.2 °C for the typical indoor temperature range. Figure 9 below shows the typical
accuracy of the STM 550 temperature sensor as a function of the ambient temperature.
Figure 9
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Temperature sensor accuracy
To determine the overall system accuracy, the quantization error (reporting step size) de-
termined by the selected EnOcean Equipment Profile (EEP) has to be added to this value.
3.4
Humidity sensor
STM 550 integrates a high-performance humidity sensor achieving accuracy of better than
+-3 % r.h. throughout the entire operation temperature range and an accuracy of better
than +- 2 % r.h. for the typical indoor humidity range. Figure 10 below shows the typical
accuracy of the STM 550 humidity sensor as a function of the ambient humidity.
Figure 10
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Humidity sensor accuracy
To determine the overall system accuracy, the quantization error (reporting step size) de-
termined by the selected EnOcean Equipment Profile (EEP) has to be added to this value.