Overview
At TESSAN, every product is assigned a unique serial number (SN) at the time of production. This number serves as a digital "identity card" for each unit, enabling full traceability across the entire supply chain—from manufacturing and quality control to distribution and after-sales support.
Our SN coding system is standardized across all product lines and production methods (screen printing and laser engraving), ensuring consistency, accuracy, and compliance with global regulatory requirements.
Verification & Support
If you need to verify the production details of your TESSAN product, please contact our customer support team with your serial number. We will be happy to assist you with authenticity checks, warranty validation, or product traceability inquiries.
How to Find Your Serial Number (SN)
Your product’s unique SN is printed or engraved directly on the device, below the product specifications/technical parameters section (usually on the back or bottom of the unit, alongside safety certifications and electrical ratings). This code is essential for warranty validation and product traceability.
Core Structure & Definitions
All TESSAN serial numbers follow a structured format that includes key production information. The core structure is as follows:
| Position Range | Character(s) | Description | Rules & Examples |
|---|---|---|---|
| 1-2 | TS | Company Fixed Prefix | Fixed as TS, the abbreviation of TESSAN. |
| 3-4 | XX | Supplier Code | Unique 2-digit code assigned to each supplier. |
| 5 | X | Product Status Identifier |
A = Normal new product B = After-sales refurbished/repaired |
| 6 | X | Production Year Identifier | Last digit of the production year. Example: 2024 → 4; 2025 → 5 |
| 7-8 | XX | Production Week Identifier | 2-digit code for the production week. Example: Week 1 → 01; Week 42 → 42 |
| 9-13 | XXXXX | Product Serial Number | Range: 00001–99999. If exceeding 99999, use letters A–Z (excluding 'I'). Example: 100001 → A0001 |