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USER MANUAL
STM 550X / EMSIX
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ENOCEAN MULTI-SENSOR
© 2020 EnOcean | www.enocean.com F-710-017, V1.0
STM 550x / EMSIx User Manual | v1.0 | February 2020 | Page 23/79
3.3
Temperature sensor
STM 550x 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 12 below shows the typical
accuracy of the STM 550x temperature sensor as a function of the ambient temperature.
Figure 12
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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 550x 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 13 below shows the typical
accuracy of the STM 550x humidity sensor as a function of the ambient humidity.
Figure 13
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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.