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Sigfox Ready similarity rules

Introduction

Acronyms and abbreviations

- PCB: Printed Circuit Board

- BOM: Bill of Material

 Scope

This document applies to Sigfox partners planning a Sigfox ReadyTM Certification by similarity for their end-product.

This document intents to explain what similarity is and to define the rules for which a new product can apply for similarity.

What is similarity?

This case generally occurs when partner is varying his product offer through his company product catalog of various products that only differ from sensor type or application. 

Certification by similarity applies to a new end-product going to Sigfox ReadyTM certification and which is based on an already Sigfox ReadyTM Product.

The new product is the device to be certified, by similarity to a reference product. The reference product is already a Sigfox ReadyTM product that has been Sigfox certified.

 

To determine if similarity applies to the new device, a close comparison is made between the new product and the reference product. This comparison is gathered into the similarity checklist in order to the Sigfox certification team to analyze the differences between both products. 

If similarity applies, there is no need to perform the radiated tests on the similar product that are requested for a Sigfox ReadyTM certification. Partner only needs to file the end-product similarity checklist and submit it to certification filing. Self-declaration checklist filled by partner will prove the similarity assuming his end-product follows the similarity rules.

A new product certificate is issued for the new end-product based on an already Sigfox ReadyTM end-product.

The end-product similarity checklist is available at the resources.sigfox.com link.

On the left column of the similarity checklist, partner will fill the reference end-product information and on the right column the information of the end-product to be certified by similarity.

The rules of similarity

Any end-product is basically the combination of the following hardware pieces:

  • a Sigfox VerifiedTM modem (module or reference design)
  • a PCB with its BOM including the sensors
  • an enclosure
  • a power supply (usually battery)
  • an antenna (integral or external antenna)

In comparison to the reference device, the product to be certified must follow the below similarity rules:

  • same Sigfox VerifiedTM modem (module or reference design)
  • same PCB layout and PCB layers
  • same battery or power supply reference
  • same enclosure
  • same antenna

 


This means that the product to be certified may differ in:

  • the BOM: added or removed components/sensors from identical PCB are allowed
  • the target application with different sensor type and applicative firmware
  • the way to connect battery (soldered or removable)

 

These changes must have no impact on radiated performances and radiation pattern and must not affect the class of the product.

Examples:

  • Enless Wireless proposes a temperature sensor TX TEMP AMB 200-001 and a humidity/temperature sensor TX TEMP HUM AMB 200-002. These two products have same modem, same PCB layout and layers, same battery, same enclosure and antenna. They differ from the BOM with some added/removed components and sensors that do not impact the radiated performances of the product.
    TX TEMP HUM AMB 200-002 was certified by similarity to the TX TEMP AMB 200-001
  • Elko proposes a universal sensor AirIM-100S for detection of emergency situations. It is used for monitoring temperature, voltage or current passage, levelling or energy measurements. On the other hand, the AirTM-100S is a pulse transducer, which uses magnetic, infrared or LED sensors to capture data from home energy meters (electricity, water, and gas). These two products have same modem, same PCB layout and layers, same battery, same enclosure and antenna. They differ from the BOM with some added/removed components and sensors that do not impact the radiated performances of the product. 
    AirTM-100S was certified by similarity to the AirIM-100S 

 

 

 

 

 

 

 

 

 

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