Features overview
Transmission Frequency / Data Rate
868.300 MHz / 125 kbps
Transmission Power
+5 dBm
Transmission Range (for guidance only)
typ. 200 m free field / 30 m indoor environment
Temperature Measurement Range / Accuracy
-20 °C … +60 °C (NOTE 1) / ± 0.3 K
Humidity Measurement Range / Accuracy
0 … 100 % r.h. (NOTE 1) / ± 3% r.h.
Illumination Measurement Range / Accuracy
0 … 65000 Lux (NOTE 1) / ± 10 %
Acceleration Measurement Range / Accuracy
± 2 g / ± 0.03 g
Acceleration Wake Threshold
0.03 g (default, configurable via NFC)
Update Rate (excl. random offset)
Every 60 seconds (configurable via NFC)
Device Configuration
NFC (ISO 14443)
Supported EEP (selectable via NFC)
D2-14-41 (default)
D2-14-40, A5-02-05, A5-04-01, A5-04-03
A5-06-02, A5-06-03, A5-14-05, D5-00-01
Power Supply
Integrated solar cell
Operating Time In Darkness (at 25°C)
4 days (after full charge)
Backup Power Supply (optional)
CR1632
Dimensions (STM 550 module)
40 mm x 40 mm x 13 mm
Operating Temperature / Humidity
-5°C … +45°C / 0 … 90% r.h. (non-condensing)