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User Manual May 2019 | Page 5/28
USER MANUAL
Energy Harvesting Magnet Contact Transmitter Module
STM 320 / STM 329 / STM 320U
(Stepcode DE and later)
2
GENERAL DESCRIPTION
This user manual specifies STM 32x modules with stepcode DE or later:
See chapter “6.1 Product Label” to find out the module stepcode
User manual for older modules can be downloaded from the product website
For a detailed description of product changes see Product Change Notification (PCN).
2.1
Basic functionality
The radio transmitter module STM 32x from
EnOcean enables the implementation of a wire-
less magnet contact sensor. Powered by a solar
cell, it works absolutely maintenance-free. An
integrated energy store allows operation for
min 10 days in total darkness.
Key applications are window and door sensors.
The STM 32x supervises an integrated reed
contact and reports every status change im-
mediately (open <> closed). In addition a sign
of life signal is transmitted every 20-30 min-
utes.
A LRN button is pre-installed on the PCB. When this button is pressed a special teach-in
(Learn) telegram is sent. Additionally this button is used to switch between transport, stan-
dard and secure mode. In secure mode the communication is protected by enhanced secu-
rity features e.g. encryption.
Features with built-in firmware
Pre-installed solar cell
On-board energy storage and charging circuit
On-board LRN button
On-board TX indicator LED
On-board reed contact
Communication protected by enhanced security features
Exemplary image
