Part No.


wall or equipment mounted for measuring temperature, humidity, illumination or acceleration / orientation.

EMSIA enables the realization of energy harvesting wireless sensors communicating according to EnOcean Alliance radio standard.

Key applications are wall mounted or equipment mounted sensor solutions for the measurement of temperature, humidity, illumination or acceleration / orientation.

EMSIA integrates dedicated sensors for temperature, humidity, illumination, acceleration and magnet contact. These sensors measure and transmit the current status every 60 seconds. The transmission is indicated using a dedicated LED.

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  • Detail

Features, Benefits & Functions

  • Fully autonomous operation under sufficient lighting with pre-installed solar cell  
  • Battery backup option for operation in dark surroundings  
  • Measures Temperature, Humidity, Ambient light level, Acceleration, Magnetic contact   
  • Immediately wake-up and transmit an update if an acceleration event occurs  
  • Integrated NFC interface that can be used for device configuration and device commissioning.

EMSIA will immediately wake-up and transmit an update if an acceleration event occurs (e.g. due to being moved or shaken) after a period without such change.During standard operation, the module wakes up periodically and reports the current sensor status using data telegrams.   


The wake-up timer is by default configured to wake-up approximately every 60 seconds. If acceleration exceeding the configured threshold is detected for the first time after a period without exceeding this threshold then it wakes up immediately (wake on acceleration event). Likewise, if the status of the magnet contact changes (from open to closed or vice versa) then this is reported immediately as well (wake on magnet contact event).


EMSIA contains an integrated solar cell optimised to generate the required energy based on available ambient lighting. Under typical indoor lighting scenarios (200 lux for 6 hours per day) it operates fully self-supplied.


Transmission Frequency / Data Rate868.300 MHz / 125 kbps
Transmission Power+5 dBm
Transmission Range (for guidance only)typ. 200m free field / 30m indoor environment
Temperature Measurement Range / Accuracy-20 °C … +60 °C / +- 0.3 K
Humidity Measurement Range / Accuracy0 … 100 % r.h. / +- 3% r.h.
Illumination Measurement Range / Accuracy0 … 65000 Lux / +-10 %
Acceleration Measurement Range / Accuracy+- 2 g / +- 0.03 g
Acceleration Wake Threshold0.03 g (default, configurable via NFC)
Update Rate (excl. random offset)Every 60 seconds (configurable via NFC)
Device ConfigurationNFC (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 SupplyIntegrated solar cell
Operating Time In Darkness (at 25°C)4 days (after full charge)
Backup Power Supply (optional)CR1632
Dimensions (WLP)49 mm x 49 mm x 13 mm