Why This Guide Exists
We have been manufacturing LED strips since 2008. In that time, we have seen thousands of orders go wrong — not because of bad products, but because of one thing: miscommunication in the inquiry stage.
Buyers didn't know what to ask. Suppliers didn't always explain. And by the time the shipment arrived, it was too late.
This guide exists to fix that. Below are the 5 parameters that cause the most problems — and what you should actually ask for before you sign anything.
1. Voltage — The First Question Nobody Asks
Before you ask for a price, ask: What voltage do I need?
LED strips come in 12V, 24V, 36V, 48V, 110V, and 220V. Using the wrong voltage means one thing: the strips arrive dead, or worse, they burn out within days.
What to do:
- Know your market's standard voltage. Mexico and Brazil operate at 110V-127V. Most of Latin America uses 220V.
- Tell your supplier exactly what voltage you need — not just "LED strip" but "12V LED strip" or "220V LED strip."
- If you're unsure, ask your supplier for a recommendation based on your installation application. A good supplier will ask you these questions first.
Common mistake: Ordering 24V strips for a 110V system without a transformer. Don't assume the supplier will catch this.
2. Color Temperature — "Warm White" Is Not a Specification
When buyers say "warm white," they usually mean "something yellowish." But warm white spans a range from 2700K to 3500K, and those numbers matter more than most buyers realize.
Why?
Because LED batches vary. If you order "warm white" without specifying a Kelvin value, you might receive 2700K today and 3200K next month. On a large installation, the color difference will be visible. Your client will notice. You will get the call.
What to do:
- Specify the exact Kelvin value. Write it in your inquiry. Write it in your PO.
- If you're unsure what Kelvin your project needs, ask your supplier for samples and compare them side by side under your actual installation conditions.
- For retail signage in Latin America, 3000K-4000K is the most common range. Warm enough to look inviting, neutral enough to look professional.
Quick reference:
| Application | Recommended Kelvin |
|---|---|
| Residential / Hospitality | 2700K - 3000K |
| Retail / Commercial | 3500K - 4500K |
| Industrial / Outdoor | 5000K - 6500K |
3. IP Rating — Where Most Buyers Get Fooled
IP rating is the single most falsified specification in the LED industry. We see it every week.
A supplier tells you the strips are IP65. You install them outdoors. Three months later, the strips fail. You open a dispute. The supplier says: "Our IP65 is designed for indoor use."
There is no such thing as indoor IP65.
What IP ratings actually mean:
| Rating | What It Protects Against | Where to Use |
|---|---|---|
| IP20 | Nothing. Indoor only. | Indoor signage, furniture, display |
| IP65 | Splashproof. Water jets. | Covered outdoor, kitchens, bathrooms |
| IP67 | Short-term water immersion. | Full outdoor, rain exposure |
| IP68 | Continuous underwater use. | Swimming pools, fountains |
What to do:
- Never accept a supplier's verbal or written claim alone. Ask for third-party laboratory test reports from an accredited testing facility.
- If a supplier cannot provide a test report for their IP rating, treat it as unverified.
- For Latin American outdoor projects, especially in coastal areas of Mexico or Brazil, we recommend IP67 as a minimum. Salt air accelerates corrosion on any rating below this.
4. Maximum Single-Feed Length — The Problem Nobody Explains
Here is something most suppliers don't volunteer: LED strips have a maximum length they can run on a single power connection before the light at the end becomes noticeably dimmer.
This is called voltage drop. The longer the strip runs from a single power source, the more voltage is lost along the way, and the dimmer the end becomes.
Real numbers:
| Voltage | Recommended Max Single-Feed Length |
|---|---|
| 12V | 3 to 5 meters |
| 24V | 8 to 10 meters |
| 36V and above | Project-specific calculation |
If you need a 15-meter run on 12V strips, you cannot simply plug one end into power. You need double-end power injection — power fed from both ends, or power injected at the midpoint.
What to do:
- Tell your supplier the total length of your installation before ordering.
- Ask them to calculate the power injection points.
- If your supplier doesn't raise this issue unprompted, be suspicious. They might not have noticed. Or they might be hoping you won't.
5. Warranty — The Answer That Tells You Everything About the Product
When a supplier tells you their strips come with a 1-year warranty, that tells you something: their production line for that product uses lower-grade components. The factory knows it won't last longer than a year.
When a supplier offers a 3-year warranty on the same-looking product, that is a different production line with higher-grade components. It costs more. But it also fails less.
What to do:
- Always ask: Which production line does this order come from?
- A 1-year warranty and a 3-year warranty on visually identical strips are not the same product. They just look the same in photos.
- For commercial projects in Latin America — retail stores, hotels, restaurants — we recommend specifying a minimum 3-year warranty and confirming it in writing. This forces the supplier to use the right production line.
- Get warranty terms in writing, not just in a product page. Specify what is covered (replacement, repair, who pays for shipping) and what is not.
Putting It All Together
Before you send your next inquiry, make sure you can answer these 5 questions:
- What voltage does my installation require?
- What exact Kelvin color temperature do I need?
- What IP rating does my environment actually require — and can the supplier prove it?
- How long is my total run, and how will power be injected?
- What warranty applies, and which production line does my order come from?
If your current supplier cannot answer all five of these questions before you place an order, find a different supplier.
A supplier who asks you these questions before quoting is worth keeping. A supplier who only asks for quantity and target price is one you will need to manage carefully — because you will be the one managing the problems later.
Questions? Let's Talk.
If you're sourcing LED strips for a signage project and want to discuss your specific requirements, feel free to reach out. We work with distributors, sign factories, and project contractors across Latin America and have experience with the certifications, voltage standards, and logistics requirements of each market.
We offer free samples for qualified inquiries.