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)