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DATA SHEET V1.3
Magnet Contact Transmitter
Module STM 32x / STM 320C
STM 320U
The radio transmitter module family
STM 32x from EnOcean enables the
implementation of a wireless magnet
contact sensor.
Powered by a small pre-installed solar cell,
it works absolutely maintenance-free.
An integrated energy store allows operation
for several days even in total darkness.
Key applications are window and door sensors.
Functional Principle
The STM 32x supervises an integrated reed contact and reports every status change immediately
(open<>closed). In addition a sign of life signal
is transmitted every 20-30 minutes.
STM 32x implements three frequency variants –
STM 320 /STM 329 using 868MHz, STM 320C
using 315MHz and STM 330U using 902MHz.
Features Overview
Power supply
Ordering Code
S3001-D320
S3001-D329
S3031-D320
S3051-D320
Additionally the STM 320 and STM 329 in 868
MHz include the enhanced secure mode. In enhanced secure mode the communication is protected by enhanced security features e.g. encryption.
provided by a small pre-installed solar cell
Antenna
Frequency
Type
STM320
STM329
STM320C
STM320U
pre-installed helical antenna
868.3 MHz (STM 32x) / 315.0 MHz (STM 320C) / 902.875 MHz (STM 320U)
Radiated output power
Data rate / Modulation type
STM 320: typ. 5 dBm (EIRP)
STM 329: typ. 5 dBm (EIRP)
STM 320C: +92 dBµV/m ± 2 dB2
STM 320U: +99 dBµV/m ± 2 dB2
125 kbps / ASK(868MHz, 315MHz) or FSK(902MHz)
EnOcean Equipment Profile
D5-00-01
Start-up time with empty energy storage
typ. <2.5 min @ 400 lux, 25°C
Initial operation time in darkness @25°C1
typ. 6 days, if energy storage fully charged
Reed contact
1x internal, Meder MK23-90-BV14496 or MK01-I
Teach-in button
1x internal
Transmission indicator
Module dimensions
Operating temperature1
Encryption Algorithms
1x LED
43 x 16 x 6 mm
-20 up to +60 °C
VAES 128, CMAC – STM 320 / STM 329
1
Tolerance of measurement in production at 50 Ω
2
Full performance is achieved after several days of operation (up to two weeks) at good illumination level.
Performance degrades over life time, especially if energy storage is exposed to higher temperatures.
Each 10 K drop in temperature doubles the expected life span.
© EnOcean | www.enocean.com
Subject to modifications | v1.3 | February 2015
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