September 4, 2016

D7A :: LoRa :: SigFox

What is DASH7 ?

The DASH7 Alliance Protocol (D7A) is an Open Standard for bi-directional wireless communication tailored for sensor-actuator applications. D7A stems from ISO 18000-7 for Active RFID and operates in the sub-GHz ISM bands. You can freely download the latest D7A version 1.2 specifications from


D7A fills the gap between the Short and the Large Area Networks. D7A excels in urban and industrial network installations connecting actuators and messaging applications (sensors, alarms, states) with ranges up to 500 m.


D7A’s physical layer has very efficient energy-per-bit characteristics and can sustain fluidly an important uplink messaging throughput. It allows reactive downlink access and over-the-air (OTA) code upgrade. D7A is a highly efficient (compact) protocol tailored for IoT. The overhead for transmitting secured and authenticated data is small, which is beneficial for both the power consumption and throughput.


You can check our D7A equipment here.

D7A can be easily enhanced with any non-standard physical layers (modulation). In particular WizziLab’s D7A stack  seamlessly integrates LoRa modulation in parallel to the standard FSK modulation (in compatible hardware) allowing the same long range coverage as LoRaWAN, while keeping all fancy features available in D7A v1.2 – bi-directionality, structured data, etc.

We also have an implementation of D7A over UWB physical layer (IEEE802.15.4a) for precise ranging application.

D7A :: D7A-LoRa :: LoRaWAN

WizziLab offers a triple-mode protocol firmware featuring standard D7A v1.2, D7A-LoRa and LoRAWAN connectivity in compatible equipment.

D7A-LoRa is an extension of D7A v1.2 using LoRa physical layer. It is seamlessly integrated in the standard D7A stack and allows the same long range coverage as LoRaWAN, while keeping all fancy features available in D7A v1.2 – bi-directionality, structured data, smart addressing, etc.

LoRaWAN is a great ultra long range technology in the process of deployment in several EU countries by major operators. LoRaWAN allows country-scale coverage at low cost both for the operator and the end user.

In exchange, LoRaWAN throughput is very limited (typical messaging rate is once every 5 minutes) and the downlink access can only be initiated by the end node.

LoRaWAN is best suited for localization, alarm or low-rate sensor applications. LoRaWAN is not suited for actuator, frequent messaging applications, or OTA code upgrades.


… :: SigFox

The SigFox stack can be added as an option to our firmware, resulting in a quadruple mode D7A :: D7A-LoRa :: LoRaWAN :: SigFox stack on an single hardware (for example WM2050). The addition of SigFox connectivity requires the certification of the device to operate on the SigFox network. Feel free to contact us for more information.

How can DASH7 technology help your application?

Wireless communication is always a trade-off and there is an optimal equation for every particular requirement


Our D7A customers operate private mid-range wireless networks connecting both sensor and actuator nodes. D7A allows creating device classes with different downlink reactivity that coexist in the same network.


The full system features various wireless technologies around a D7A backbone composed of sensor nodes, actuators and gateways connected to a web service in the Cloud.

You can check our D7A equipment here.

WizziLab and DASH7

WizziLab believes that the availability of network infrastructures meeting the large-scale & low-cost requirements of Connected Things is a prerequisite to the growth and success of the IoT market.

WizziLab is an active member of the DASH7 Alliance since 2011, chairs the Protocol Action Group and develops D7A products.

The DASH7 Alliance is a non profit organization promoting the use and standardization of DASH7 wireless technology, ensuring interoperability among devices, and educating the market about DASH7 opportunities.