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  • Manufacturer or author: EnOcean GmbH
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© EnOcean | www.enocean.com Subject to modifications | May 2019 DATA SHEET Energy Harvesting Magnet Contact Transmitter Module STM 320 / STM 329 / STM 320U (Stepcode DE and later) Features Overview Power supply solar cell Antenna helix antenna Frequency / Learn Button STM 320: 868.3 MHz, side button STM 329: 868.3 MHz, back button STM 320U: 902.875 MHz, side button Radiated output power STM 320: max. 6.4 dBm (EIRP) STM 329: max. 5 dBm (EIRP) STM 320U: +99 dBµV/m ± 2 dB Data rate / Modulation type 125 kBit/s / ASK (868.3 MHz) / FSK (902.875 MHz) EnOcean Equipment Profile D5-00-01 SIGNAL 0x0E (Entering Transport Mode) Start-up time with empty energy storage typ. <2.5 min @ 400 lux, 25°C Initial operation time in darkness @25°C1 min. 10 days, if energy storage fully charged Reed contact 1x internal, Meder MK23-90-BV14496 or MK01-I Teach-in button 1x internal Transmission indicator 1x LED Module dimensions 43 x 16 x 6 mm Operating temperature1 -20 up to +60 °C Encryption Algorithms VAES 128, CMAC – STM 320 / STM 329 Radio approvals STM 320 (max. radiated power +6.4dBm whip): RED (EU) STM 329 (max. radiated power+5 dBm helix) : RED (EU) STM 320U: FCC (US) / ISED (CA) 1 At 25°C with default configuration (average transmission cycle 1.500 s, 20 – 30 min). Energy storage performance degrades over life time, especially if energy storage is long time exposed to very high temperatures. High temperatures will accelerate aging. Very low temperature will temporary reduce capacity of energy store and this leads to considerable shorter dark time operation. The radio transmitter module STM 32x ena- bles the implementation of a wireless mag- net contact sensor. Powered by a solar cell, it works absolutely maintenance-free. An integrated energy store allows operation for several days even in total darkness. Key applications are win- dow and door sensors. Functional Principle The STM 32x supervises an integrated reed con- tact and reports every status change immediately (open<>closed). In addition a sign of life signal is transmitted every 20-30 minutes. In enhanced secure mode the communication is protected by encryption. STM 32x is available in following variants – STM 320 / STM 329 using 868 MHz and STM 320U using 902 MHz. Type STM320 STM329 STM320U Ordering Code S3001-D320 S3001-D329 S3051-D320 Exemplary image