Red Light Factory Audit Checklist: What to Verify On-Site or by Video Call

RedVance is a factory that gets audited — buyers walk our lines in person and by video — so this is written from the side that has nothing to lose from a rigorous checklist. The strongest thing an honest factory can do is tell you exactly how to inspect one.

Most buyers only check layer two — “I saw a factory.” But a trading company can borrow a factory for a tour, which is why layers one and three exist: the name on the paperwork and the depth of the engineering answers are much harder to borrow. The conceptual framework behind this is our manufacturer verification guide; this checklist is its execution.

• SMT and PCBA area. If the factory claims in-house board production, the pick-and-place lines and reflow ovens should exist and be running — not silent showpieces.
• Assembly line for your product class. Panels moving through stations, not a room of finished boxes. Ask to follow one unit through the stations.
• Testing stations. This is the tell. A factory that measures its output has instruments at the line — ask what each one checks and to watch a unit being tested. No visible testing for the product they claim to build is a serious gap.
• Materials and stock. Reels of LEDs, drivers, housings consistent with the product — components in, not just cartons out.
• Aging / burn-in area. Panels running under power before shipment. Its presence says the factory catches early failures itself rather than letting your customers do it.
• Scale sanity check. Does the size of the operation plausibly match the capacity and lead times they quoted you?

A video audit is only as good as your control of it. The protocol:

1. Live, not pre-recorded. Insist on a real-time call. A polished video tour proves editing skills, nothing else.
2. You direct the camera. “Walk left.” “Show me that station.” “Zoom in on the label of that reel.” Unscripted navigation is the point — a borrowed factory falls apart under it.
3. Anchor the location. Ask to see the building exterior and signage on the way in, and anything on the wall bearing the company name — then match it against the entity on your quote.
4. Follow one unit. Have them walk a single panel from boards to packing, station by station.
5. Watch a live test. A unit measured at the testing station, on camera, with the readout visible.
6. Engineer on the call. Not just sales — the questions in the next section get asked to whoever claims to have designed the product.
7. Ask for the unexpected. One request they couldn’t have staged: open a specific drawer, show today’s production schedule, read out a reel label. Small, revealing.

Ask these live, to the engineer. None have a scripted answer:

• “Which LED brand and bin is in this panel, and why that bin?” A maker explains the choice; a trader recites “high quality LEDs.”
• “How does your driver regulate current — and why not PWM?” Tests whether the driver-quality story from our EMF, flicker and heat guide is theirs or borrowed.
• “What’s your thermal design target, and what happens to output over a 30-minute session?” A designer knows the curve; an assembler doesn’t.
• “Show me how you measure irradiance — which instrument, what distance, thermal state?” The measurement-conditions discipline from our irradiance claims guide, asked in person.
• “What changed between this version and the last one, and why?” Real products have revision histories; relabeled ones have none.

You don’t need to fully understand the answers — watch the fluency. Specific, immediate, sometimes over-detailed answers are the sound of the actual maker. Vague deferrals to “our engineering team will confirm” are the sound of a middle layer, the distinction from our factory vs white-label guide.

Red flags — one deserves an explanation, several end the evaluation:

• Entity name mismatch between building, certificates, and the company you’d pay.
• Live walkthrough refused or endlessly rescheduled.
• No visible testing equipment for the product they claim to build.
• Engineering questions answered only by sales, in marketing language.
• Certificates naming a different company or model — the verification steps from our certifications guide.

Third-party inspection: for meaningful order values, an independent on-site audit is cheap insurance against a bad deposit. Use it for what video can’t fully verify — the address, scale, and that lines genuinely run — and keep the engineering questions for your own video call, because a general inspector won’t ask them. Audit passed, the next steps are the sample and production controls in our sample evaluation guide and the process framework in our manufacturer and wholesale sourcing guide.

What a manufacturer can do about it: make auditing easy — offer the live walkthrough before being asked, put an engineer on the call by default, show the testing station with a unit under measurement, and keep the entity name consistent across the building, the documents, and the invoice. A factory confident in its floor treats the audit as its best sales tool.