Why DASH7 ?


1. Open Standard of Ultra Low Power Mid-Range Sensor and Actuator Communication

  • DASH7 Alliance Protocol specification is free downloadable
  • Open Source Stacks available
  • Communication range from a few meters to a few kilometer
  • Multi-year battery performance

2. Blast your sensor network with DASH7

  • Bursty
    Data transfer is abrupt and does not include content
    such as video, audio, or other isochronous forms of data
  • Light
    For most applications, packet sizes are limited to 256 bytes.
    Transmission of multiple, consecutive packets may occur
    but is generally avoided if possible.
  • Asynchronous
  • DASH7’s main method of communication is by command-response,
    which by design requires no periodic network “hand-shaking” or
    synchronization between devices.
  • Stealth
    DASH7 does not use discovery beacons, end nodes can chose to
    respond only to pre-approved devices.
  • Transitional:
    A DASH7 system of devices is inherently mobile or
    transitional. Unlike other wireless technologies DASH7 is
    upload-centric, not download-centric, thus devices do not
    need to be managed extensively by fixed infrastructure
    (i.e. base stations) to respond only to pre-approved devices.
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 3.  Ultra Low Power

  • Low energy per bit transmitted / received (increased battery life)
  • Narrow band low silicon complexity (low power consumption)
  • Low infrastructure deployment cost (no need of repeaters, relays, system “tuning” or “calibration”)
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4. Seamless Indoor and Outdoor use:

  • Even in presence of concrete, metal and water
  • Acceptable frequency band in most regions
  • As an example of sub 1 GHz spectrum the frequency of 433 MHz is not true ISM band worldwide, but close to it
  • No interferences generated by Sub-Gig Bands  systems with any of licensed devices such as Wi-Fi, etc.
  • Avoids the use of busy 2.4GHz channels

DASH7
Beyond Wireless Communication

5. Optimal RF performances:

  • Low signal attenuation – very good range – No Line of Sight Transmission
  • Sub-Gig Bands have significantly lower signal attenuation than higher ISM frequencies (23dB and 15dB less attenuation that 2,450 MHz)

6. Context Aware Sensor and Actuator Data Propagation System

  • Event based data propagation based on sensor value changes
  • Configurable through file system
  • Handles scheduled scan cycles
  • Handles queries from other devices
  • Handles queries and notifications on file changes
  • File system configurable over the air