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Dresden Elektronik
22A00 and 22C00
STM300, STM300C and STM300U
TCM 310x
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STM300, STM300C and STM300U

Scavenger Transceiver Modules


The extremely power saving RF transmitter module STM 300 of EnOcean enables the realization of wireless and maintenance free sensors and actuators such as room operating panels, motion sensors or valve actuators for heating control. Power supply is provided by an external energy harvester, e.g. a small solar cell or a thermal harvester. An energy storage device can be connected externally to bridge periods with no supply from the energy harvester. A voltage limiter avoids damaging of the module when the supply from the energy harvester gets too high.

Product Description

The module provides a user configurable cyclic wake up (every 1, 10 or 100 sec.). After wake up a radio telegram (input data, unique 32 bit sensor ID, checksum) will be transmitted in case of a change of any digital input value compared to the last sending or in case of a significant change of measured analogue values (different input sensitivities can be selected). In case of no relevant input change a redundant retransmission signal is sent after a user configurable number of wakeups to announce all current values. In addition a wake up can be triggered externally.

The distinguishing feature that sets Dolphin apart from other wireless system architectures is energy harvesting, which enables self-powered wireless sensors and actuators. The Dolphin system architecture joins the components necessary for an energy autonomous wireless sensor system that operates on a standardized wireless network. These include energy conversion and storage components, EnOcean wireless modules for energy management, data acquisition, data processing and wireless data transmission, and finally the software blocks operating system, API and application programs.

  • 3 A/D converter inputs
  • 4 digital inputs
  • Configurable wake-up and transmission cycle
  • Wake-up via Wake pins
  • Voltage limiter
  • Threshold detector
  • Integrated 16MHz 8051 CPU with 32KB Flash and 2kB SRAM
  • Receiver functionality
  • Up to 16 configurable I/Os
  • 10bit ADC, 8bit DAC
  • EnOcean Radio Standard
  • 0.2µA Deep Sleep Mode
  • R&TTE EN 300 220 (STM300), FCC CRF-47 Part 15 (STM 300C/STM300U)
  • Antenna Type:Antenna Not Included
  • Current - Receiving:33mA
  • Current - Transmitting:24mA
  • Data Rate:125kbps
  • Frequency:868MHz
  • Memory Size:32kB Flash, 2kB SRAM
  • Modulation:ASK
  • Mounting Type:Surface Mount
  • Operating Temperature:-25°C ~ 85°C
  • Package / Case:Module
  • Packaging:Tape & Reel (TR)
  • Power - Output:7dbm
  • RF Family/Standard:General ISM < 1GHz
  • Sensitivity:-98dBm
  • Voltage - Supply:2.1V ~ 4.5V