902 MHz EnOcean for USA/ Canada
Modules with 902 MHz frequency are suitable for USA adopting FCC specification and Canada adopting IC specification

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STM 333U

Energy harvesting wireless temperature sensor module - including solar cell, helical antenna and side oriented LRN button

Manufacturer Logo
Product name
STM 333U
Module Category
Wireless Switch & Sensor Module
902 MHz EnOcean
Ordering Code

The extremely power saving RF transmitter module STM 333U (including solar cell, helical antenna and side oriented LRN button) of EnOcean 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.

STM 333U also supports the plug-in humidity sensor module HSM 100.

Please find here a product change notification on "New energy store for STM 3xy/4xy product family".

EnOcean Software and Firmware

Product Name
Short description
EnOcean LinkLinux based middleware for the EnOcean radio stack. Library to interpret all EnOcean Protocols (e.g. ESP3, EEP, Security) providing easy entry into EnOcean interoperable eco-systems for your applicationDetails
Gateway ControllerTransparent gateway to receive and transmit all EnOcean Telegrams on 868, 315 and 902 MHz. Includes Smart Acknowledge and Remote Management.Details