STM550

STM550 is a multisensor module that 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. STM 550 integrates dedicated sensors for temperature, humidity, illumination, acceleration and magnet contact. These sensors measure and transmit the current status every 60seconds. STM 550 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. STM 550 contains an integrated solar cell optimized to generate the required energy based on available ambient lighting. STM 550 provides an integrated NFC interface that can be used for device configuration and device commissioning. In addition, it contains an LRN button that can be used for simple commissioning tasks.

• Transmission frequency/data rate is 868.300MHz/125Kbps and +5dBm transmission power
• Transmission range (for guidance only) typ. 200m free field / 30m indoor environment
• Temperature measurement range /accuracy range from -20°C to +60°C / ±0.3K
• Humidity measurement range/accuracy range from 0 to 100% R.H../±3% R.H.
• Illumination measurement range/accuracy from 0 to 65000Lux /±10%
• Update rate (excl. random offset) of every 60seconds (configurable via NFC ISO 14443)
• Operating time in darkness (at 25°C) 4 days (after full charge)
• Operating temperature /humidity range from -5°C to +45°/0 to 90% R.H.. (non-condensing)
• Dimension is 40mm x 40mm x 13mm
• Delivered as module in PTM 21x form factor for integration into OEM customer designs