TPMS Sensor Certification: How to Check the Real Status Why we do not publish certification logos, who actually holds a certificate, and how a buyer can verify an approval before relying on it.

What we will not write on this page

Most supplier pages in this industry carry a row of certification logos. This page does not, and the reason is not modesty. A logo on a website is not evidence, and we would rather tell you what we can and cannot produce than publish a claim you cannot check.

So, plainly: we do not describe our products as certified for any market on this website. We have no certificate numbers we can quote to you from our own paperwork at this moment. When you ask us about approvals for your market, the answer will name the approval, name who applies for it, and state the current status — which may be "not started", and will be presented as such.

That is a less comfortable answer than a wall of marks. It is the answer that survives due diligence.

Why "certified" is the wrong word on a supplier site

Certification is not a property of a product. It is a property of a product, a market, an applicant and a scope, evidenced by a document with a number, an issuing body and a validity date.

A radio device, for example, is assessed against a specific radio standard, in a specific band, at a specific power, by or on behalf of a specific applicant. A tyre-pressure product is assessed against whatever the destination market requires for radio equipment, and sometimes additionally against vehicle-level requirements. Change the band or the valve and the assessment may no longer apply.

Because of that, three buyers of the same sensor can have three different certification positions:

• A distributor importing into a market is often the applicant for that market's radio equipment requirements.
• An OEM fitting the sensor to a type-approved vehicle may find the vehicle approval covers part of the picture and not the rest.
• A buyer in a market with no specific TPMS requirement may need nothing beyond a declaration of conformity from the manufacturer.

A single line reading "certified" tells you none of this.

Who actually holds the certificate

This question resolves most confusion. For radio equipment, the certificate is usually held by the entity that applied for it. Depending on the arrangement, that can be:

• The manufacturer, when it applies for its own product across the markets it sells into.
• The importer or distributor, when local rules require a local applicant — this is common.
• The OEM, when the sensor is part of a vehicle-level approval.

Frequently it is a combination. The practical consequence is that "do you have the certificate" is the wrong question. The right ones are:

1. For my market, which approval applies?
2. Who is the applicant of record for it?
3. What is the current status — not started, in progress, or issued?
4. If issued, can I see the document and check its scope against the product I am buying?

If a supplier cannot answer those four, assume the position is unknown and plan accordingly. Our approach to documentation is set out on the quality page and the supplier page.

Which approvals apply, market by market

We cannot give a single answer, but the categories are consistent.

Market	Typical requirement	Practical note
European Union	Radio equipment requirements; aftermarket vehicle parts may need more	The applicant is often the importer
United States	Radio equipment authorisation for the transmitter	Frequently held by the party placing it on the market
Mexico	Radio and telecom requirements, plus labelling rules	Local representation is often required
Malaysia	Radio and communications equipment requirements	Registration through a local party
Other markets	Varies; some require nothing specific for TPMS	Ask, and ask in writing

Two market notes change project planning. In Mexico, labelling and local representation often affect the schedule more than the radio work does. In Malaysia, the registration route is well defined but requires a local entity, so it belongs in the plan from the start rather than at the shipping date.

How to verify a certificate yourself

If you are handed a certificate, check five things before you rely on it.

The product identity. Does the model on the document match the model you are buying, including the variant and the radio configuration? A document covering a different band is not a document for your product.

The applicant. Whose name is on it? If it belongs to a third party, ask how that party relates to the product you are ordering.

The scope. Which standard, which frequency, which test items. A test report is not a certificate, and a certificate is not a test report.

Validity and status. Issued, suspended, expired or superseded.

The issuing body. Confirm the body exists and the number is findable in its own records. This takes minutes and settles most of the question.

If the document cannot be produced for inspection, treat the approval as not established. That applies to us as much as to anybody else.

What we can give you instead of a logo

What we can hand over is evidence about the product itself:

• The published specification, with band, protocol, transmit power and receiver sensitivity stated.
• A per-unit calibration record, because every sensor is calibrated in our own test process.
• The list of test steps the line performs, and the tests we do not perform in-house — thermal cycling, vibration, EMC and drop testing among them. Where those are needed for your market or your OEM requirement, they are third-party work, and we will say so rather than imply otherwise.
• A statement of what we manufacture and where.
• A written response on your market's requirements, naming the approval and the status.

That last item is the one to request in writing, because it makes the two sides explicit. If the status is "in progress", you can plan for the date. If it is "your responsibility", you can plan for the applicant and the cost.

Our own position, plainly

We are a manufacturer in Shenzhen, in Nanshan District. We make the sensors, we calibrate them, and we test them on our own line. We handle certification per market and per project: some approvals we will apply for when a programme justifies it, some belong to the importer, and some markets need nothing specific.

What we will not do is describe a product as certified when we cannot show you the document behind it. If a page on this site implies otherwise, the page is wrong and we would like to be told.

If your project depends on a specific approval, tell us the market and the product configuration early, and we will set out what applies, who must apply, and what the realistic schedule is. Ask the same question of any supplier you shortlist — the ones who can answer it are the ones worth a programme.