Features overview
Antenna
50 Ohm helix antenna (on-board)
Radio Frequency / Data Rate
STM 350 868.3 MHz ASK / 125 kbps
STM 350U 902.875 FSK / 125 kbps
Radiated Output Power (typ.)
+5 dBm
On-board Power Supply
Pre-installed solar cell
Auxiliary Power Supply
Option for backup battery (3V)
Operation time in darkness @ 25°C
min. 10 days, if energy storage fully charged 1)
Sensor performance
Temperature: ±0.5 K across entire range
Humidity: ±3.0 % r.h. between 20 … 80 % r.h.
Measurement interval
Approximately once every 100 s
Transmission interval
Every 7 … 14 measurements (affected at random) Immediate transmission in case of significant change
EnOcean Equipment Profile (EEP)
A5-04-03
SIGNAL 0x06 (Energy Level Reporting) SIGNAL 0x0E (Entering Transport Mode)
Operating and Storage temperature
Absolute Maximum: -20 °C … +60 °C Recommended1: +10 °C…+30 °C
Shelf life (in absolute darkness) delivery1
36 months after delivery2)
Operating and storage humidity
Maximum: 0% … 93% r.h., non-condensing
Recommended: < 60% r.h.
Dimensions
50±0.2 x 16±0.3 x 10mm