# UdiWatch > UdiWatch watches public EUDAMED UDI-DI and manufacturer SRN records and reports a diff when a watched field changes. Not an official European Commission service. A UDI-DI identifies a device model. An SRN identifies an economic operator, usually a manufacturer. The first successful read is a baseline, not an alert. A later read writes an event only when a watched field has a new value and that value is not empty. Pricing is a 7-day trial with a card once Stripe is connected, then €99 per month. Cancel anytime. Access continues until the period ends. A second subscription does not include another free trial. Until Stripe is connected, a new account gets those 7 days locally and nothing is charged. ## Site - [Home](https://udiwatch.com/): Know when a device leaves the EU market. - [Search](https://udiwatch.com/search): One public page per device and per manufacturer. Filter by market status and risk class. Not a copy of the register. - [Pricing](https://udiwatch.com/pricing): 7-day trial, then €99 a month. - [About](https://udiwatch.com/about): The name is UDI plus watch. Not a clock, and not the official register. - [Notes](https://udiwatch.com/blog): UDI-DI, SRN, market status, and certificate expiry. - [API](https://docs.udiwatch.com/): REST, signed webhooks, OpenAPI, and MCP. - [OpenAPI](https://udiwatch.com/openapi.json): Machine-readable contract. - [Privacy](https://udiwatch.com/privacy): Email, watches, snapshots, webhook URL, Stripe ids. Not the card number. - [Terms](https://udiwatch.com/terms): Trial and subscription rules. - [Imprint](https://udiwatch.com/imprint): Contact. Legal name and VAT before any live charge. ## Notes - [What is a UDI-DI?](https://udiwatch.com/blog/what-is-a-udi-di): A UDI-DI is the device identifier in the EU Unique Device Identification system. It names the device model in EUDAMED, not one physical unit. - [What is an SRN in EUDAMED?](https://udiwatch.com/blog/what-is-an-srn-eudamed): An SRN is the Single Registration Number of an economic operator in EUDAMED. Manufacturer SRNs look like AT-MF-000000252. - [Basic UDI-DI vs UDI-DI](https://udiwatch.com/blog/basic-udi-di-vs-udi-di): The UDI-DI identifies one device model. The basic UDI-DI groups models for one intended purpose, and EUDAMED hangs certificates on that group. - [EUDAMED: “no longer on the market”](https://udiwatch.com/blog/eudamed-no-longer-on-the-market): EUDAMED status is on the market, no longer on the market, or not intended for the EU. A change is a new UDI-DI version, not a silent edit. - [EUDAMED certificate expiry dates](https://udiwatch.com/blog/eudamed-certificate-expiry): Public EUDAMED certificate expiry hangs on the basic UDI-DI, not the label UDI-DI. If the date is absent, the public response had none. - [How to search a device in public EUDAMED](https://udiwatch.com/blog/search-eudamed-udi): Search the public EUDAMED register by UDI-DI, trade name, catalogue reference, or manufacturer SRN. Exact codes and fuzzy names do not work the same way. - [How to monitor EUDAMED for changes](https://udiwatch.com/blog/monitor-eudamed-changes): Monitor an EUDAMED UDI-DI or manufacturer SRN by storing a public snapshot and comparing the next read. The first read is a baseline, not an alert. ## Public records cited in the notes - [UDI-DI 16977660098955](https://udiwatch.com/d/16977660098955): suction Catheter. - [UDI-DI 10887714028257](https://udiwatch.com/d/10887714028257): Covered CP Stent. - [SRN AT-MF-000000252](https://udiwatch.com/a/AT-MF-000000252): Amann Girrbach AG. - [SRN CN-MF-000042120](https://udiwatch.com/a/CN-MF-000042120): manufacturer on the suction Catheter record. ## Full text - [llms-full.txt](https://udiwatch.com/llms-full.txt): the notes in plain text, generated from the same articles as the site.