USER MANUAL
STM 550X / EMSIX
–
ENOCEAN MULTI-SENSOR
© 2020 EnOcean | www.enocean.com F-710-017, V1.0
STM 550x / EMSIx User Manual | v1.0 | February 2020 | Page 14/79
2.3.5
Illumination test mode
During installation, STM 550x can measure and report the amount of ambient light available
at its solar cell in order to determine a suitable installation location as discussed in chapter
9.5.
Upon activation of light test mode, STM 550x will first wait for 15 seconds so that the installer
can leave the area to ensure a relevant measurement result.
After that, STM 550x will take measurements of the ambient light level using its solar cell
every 5 seconds for a period of one minute and compute the average illumination based on
those measurements.
The computed average illumination is then available in the NFC register ILLUMINA-
TION_TEST_RESULT as described in chapter 8.5.28.
Illumination test mode can be selected using the MODE field of the FUNCTIONAL_MODE NFC
register as described in chapter 8.5.11.
2.3.6
Factory reset mode
STM 550x can be reset to its standard settings using factory reset mode. Upon entering this
mode, STM 550x will reset all configuration registers to their default settings and then restart
operation in standard operation mode.
Factory reset mode can be selected using the LRN button as described in chapter 2.2.1 or
using the MODE field of the FUNCTIONAL_MODE NFC register as described in chapter 8.5.11.