DATA SHEET
Magnet Contact Transmitter
Module STM 320 / STM 320C
The radio transmitter module STM 320 from
EnOcean enables the implementation of a
wireless magnet contact sensor. Powered by
a solar cell, it works absolutely mainten-
ance-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 320 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.
There are two frequency variants – STM 320 in
868 MHz and STM 320C in 315 MHz.
Type
STM320
STM320C
Ordering Code
S3001-D320
S3031-D320
Features Overview
Power supply
Antenna
Frequency
Radiated output power
Data rate / Modulation type
EnOcean Equipment Profile
Start-up time with empty energy storage
Initial operation time in darkness @25°C
Reed contact
Teach-in button
Transmission indicator
Module dimensions
Operating temperature
1
1
1
provided by a small solar cell
pre-installed helical antenna
868.3 MHz (STM 320) / 315.0 MHz (STM 320C)
STM 320: typ. 5dBm (EIRP)
STM 320C: typ. 92dBµV/m
125 kbps / ASK
D5-00-01
typ. <2.5 min @ 400 lux, 25°C
typ. 6 days, if energy storage fully charged
1x internal, Meder MK23-90-BV14496 or MK01-I
1x internal
1x LED
43 x 16 x 6 mm
-20 up to +60 °C
Full performance is achieved after several days of operation (up to two weeks) at good illumination level. Per-
formance 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 | July 2011
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