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