An ISO 13485 certificate is the entry ticket, not the proof. Read the scope statement and the certified address, check the certificate is current, and confirm the issuing body is accredited for medical device certification. Then look for the behaviors that a certificate is supposed to guarantee.
Incoming inspection and component control
The optical performance of the finished red light therapy bed is decided at goods-in. Ask to see incoming inspection records for LED wavelength and flux binning, driver batches, acrylic or panel material, and the controllers. A factory that accepts whatever bin the distributor ships will produce beds whose output drifts between production runs, and your customers will notice the difference before you do.
Electrical safety testing should be performed on every red light therapy device rather than on a sample. A hipot and earth continuity test recorded against each serial number is the minimum, and the records should be retained for the period your regulator expects.
Traceability and change control
Ask whether a serial number can be traced back to the LED lot, the driver lot, the assembly operator, and the test record. If the answer requires a manual search through paper, the system exists but will not scale to your volumes.
Change control is the item buyers forget and later regret. You need a written commitment that no bill-of-materials change, however small, ships without your written approval. A substituted driver can improve the factory’s margin, invalidate your EMC report, and change the thermal profile of the product, all without a single visible difference on the outside of the bed.
