STM331

DATA SHEET Sensor Transmitter Module STM 330 / STM 331 / STM 331U / STM 332U / STM 333U (Stepcode DE and later) STM 33x is optimized for realization of wireless and maintenance free temperature sensors, or room operating panels including set point dial and occupancy button with a minimum number of external components. The module provides an integrated calibrated temperature sensor. Functional Principle Power supply is provided by a small solar cell or optional by an external 3V battery. An energy storage is installed to bridge periods of darkness. The module provides a user configurable cyclic wake up. After wake up a radio telegram will be transmitted in case of a significant change of measured temperature, the set point values or if the external occupancy button is pressed. It can be configured to use the enhanced secure mode. Available variants frequency, antenna, learn button Data rate/Modulation type Radiated output power Power supply @ VDD Operation time in darkness @ 25°C Operation start up time with empty energy store Input channels Temperature sensor EnOcean Equipment Profiles Connector Radio regulations 1 2 3 Exemplary image Type STM 330 STM 331 STM 331U STM 332U STM 333U Ordering Code S3001-D330 S3001-D331 S3051-D331 S3051-D332 S3051-D333 STM 330: 868.3 MHz, whip, back button STM 331: 868.3 MHz, helical, back button STM 331U: 902.875 MHz, helical, back button STM 332U: 902.875 MHz, whip, side button STM 333U: 902.875 MHz, helical, side button 125 kbps / ASK (868 MHz), FSK (902 MHz) STM 330: +8 dBm1 (EIRP) ± 2.5 dB2 STM 331: +5 dBm (EIRP) ± 2.5 dB STM 331U: +99 dBµV/m ± 2 dB STM 332U: +101 dBµV/m ± 2 dB STM 333U: +99 dBµV/m ± 2 dB Pre-installed solar cell min. 10 days, if energy storage fully charged3 typ.