Standard Transfer Specification Association
Standard Transfer Specification Association


All products that are required to display the STS logo must be certified by an STS accredited test house. The basic steps in obtaining certification are as follows:
  1. Download the test specifications from the STS website
  2. Before submitting your product for compliance testing, run the tests yourself on the product to ensure compliance to these test specifications.
  3. Apply for certification on the STS website, select a test house, and pay the certification fee once you receive the quotation.
  4. Prepare the samples for certification as specified in the test documents relevant to your product.
  5. Send the samples and completed annexures at the end of the test documents, as well as the product manuals to the test house. Specify if the samples must be collected by the manufacturer after the test or destroyed by the test house.

Once the test house has performed the certification testing, a recommendation letter will be sent to the STSA secretariat. The STSA secretariat will then issue a certificate of compliance to the manufacturer if the test was successful. Note: the test house will not ship samples back to the manufacturer. It is the ​​responsibility of the manufacturer to arrange for return shipping, or instruct the test house to destroy the test samples. One sample may be retained by the test house as a gold sample. Note: the latest edition of the certification documents will always be used for certification testing. It is the responsibility of the manufacturer to ensure that the latest version of these documents is used for pre-certification testing. 

How much does certification cost?

Please request a quotation here.

​Why do I need to certify products?

Certification of a product is necessary because -

  1. it gives the manufacturer assurance that his product complies with the requirements as set out in the current IEC specifications for STS compliance
  2. ​it allows the manufacturer to place the STS compliance logo on the product
  3. it allows the manufacturer to ensure compliance with tender requirements should STS complaint product be required
  4. it ensures interoperability with other STS compliant products

How often must I certify my product?

Once a product is certified, it remains certified for as long as no changes are made to the product, and as long as the manufacturer is still a member of the ​STSA. If a manufacturer ceases to be a member of the STSA, then only products manufactured up to the time he ceased to be a member are permitted to display the STS logo - any products manufactured subsequent to his membership termination are no longer considered to be STS compliant, even if no changes have been made to the product. If any changes are made to the product, then the product must be re-certified. The latest edition of the certification tests will then be used to certify the product. 

What is self-certification?

Self certification is a process by which a manufacturer can certify his own product provided that:

  1. the product had previously been certified as STS compliant by the STSA
  2. the manufacturer has made no changes that could affect the STS functionality at all
  3. there has been no revision to the STS or IEC specifications affecting STS
  4. the manufacturer takes full responsibility for the product performance and its compliance to the STS and IEC specifications
  5. ​payment meters must be re-certified if any changes are made to it - no self certification is allowed
  6. vending systems may be self certified. However, the system must be re-certified each year if any changes are made to it. 

The manufacturer can apply for self certification on the STS website. More information on self certification is contained in the STS2100-3 document.

How long does certification take?

This will depend on the test house doing the certification and the backlog of testing, but should typically take two weeks from receipt of the test samples, provided that all documentation supplied with the samples is present and correct.

What happens if the certification fails?

If a product fails certification, it must be updated and re-submitted for testing. A new testing fee will have to be paid (at the discretion of the test house depending on the nature of the changes and how much of the test was completed).

What happens if I have multiple user interfaces for a product - must I certify them all?

The certification process tests a system - i.e. the payment meter or vending system, as well as the user interface. Certification is therfore done on the entire system. If a manufacturer has multiple user interfaces which require certification, then they must all be certified independently, since the payment meter or vending system responses are given on the user interface when testing and therfore require certification.