A high-power LED traffic light order becomes easier to manage when the approved sample, technical specification and production order describe the same configuration. A photograph can establish the appearance of a signal head, but buyers also need to confirm its electrical version, mounting interface and required optical evidence before placing a bulk order.
This guide gives distributors, contractors and project procurement teams a practical way to review a sample and communicate the approved configuration to the supplier. It covers GAOQIAO’s 200mm and 300mm high-power LED signal range and the questions that should accompany a project enquiry.
Start with the indication and the installation
Identify whether the project needs circular vehicle indications or pedestrian symbols. A three-aspect vehicle head and a two-aspect pedestrian head serve different functions, even when their nominal face diameters match. Record the indication sequence, viewing direction and quantity for each location in the equipment schedule.
For replacement projects, send a photograph of the existing installation together with the nameplate and mounting dimensions. The nominal 200mm or 300mm diameter describes the signal face. It does not specify the complete assembly height, bracket spacing or clearance around a pole.
GAOQIAO lists a 200mm full ball vehicle signal with black housing, a 200mm pedestrian signal and a 300mm full ball vehicle signal with yellow housing. Select the product configuration before comparing quotations.
Ask for optical evidence that matches the sample
“High-power LED” identifies the light-source category in the catalogue. The term alone does not establish a visibility distance, a brightness increase or compliance with a project’s optical requirements. Ask the supplier to identify the optical configuration and provide the applicable test documentation for the proposed model.
Useful review points include luminous intensity distribution, signal colour, viewing angles, uniformity and the appearance of the unlit signal under external light. The project specification should determine the required performance and acceptance method. A phone photograph with automatic exposure cannot replace a photometric report.
Review daytime and nighttime operating requirements with the project designer. If dimming is required, include the control method and electrical interface in the sample request. Do not assume that a dimming feature is included simply because a product uses high-power LEDs.
Confirm one electrical version for each order line
Supply voltage is an ordering decision. The current range lists separate AC and DC versions; those options do not mean that one unit accepts every listed supply. Match the selected version to the controller output and the installation design, and retain the approved wiring information with the sample record.
The catalogue specifies 7W per illuminated aspect for the two 200mm products and 8W per illuminated aspect for the 300mm full ball product. These are per-aspect figures, not the energy consumption of a complete intersection. Include the controller and other equipment separately when preparing a power budget.
Also ask how the proposed signal and controller will be checked together, including any lamp-monitoring or dimming functions required by the project. Use the AC and DC supply-version guide to prepare the electrical information for an enquiry.
Review the housing, seals and service access
The three products described here are listed with polycarbonate housings. Their material specification should remain explicit in the purchase order. A different housing material or finish needs separate confirmation, even if another product photograph or demonstration shows a similar external shape.
During sample review, check the door opening, lens retention, visor attachment, cable entry and access to replaceable components. Confirm the mounting hardware supplied with the assembly and compare it with the installation drawing. Keep photographs of these details in the approval record so that later deliveries can be compared with the same reference.
Ingress protection and operating-temperature requirements should be supported by documentation relevant to the selected assembly. For thermal review, ask what operating conditions were used and how the LED module, driver and housing were evaluated together. A power rating on its own does not establish thermal performance or service life.
Build a clear sample approval record
A short, specific record helps prevent a sample being approved for appearance while its electrical or mechanical configuration remains undecided. Use the following checklist before releasing the production order.
- Product identity: model reference, nominal diameter, indication type, number of aspects and housing colour.
- Electrical configuration: selected voltage version, wiring reference, power measurement scope and required controller functions.
- Mechanical interface: overall drawing, bracket spacing, fixing hardware, cable entry and visor arrangement.
- Evidence: applicable optical and environmental reports, with the model and configuration identified.
- Approved sample: dated photographs, label information, drawing revision and a list of any agreed changes.
- Delivery requirements: quantity, spare parts, packaging, identification labels and destination documentation.
Record any unresolved item separately. For example, “housing appearance approved; controller compatibility pending” is more useful than a general approval that leaves the supplier guessing. Ask for written confirmation before accepting a substitution affecting the approved configuration.
Carry the sample specification into bulk delivery
At delivery, compare the received model identifiers, electrical labels and visible assembly details against the approved record. Agree the inspection scope and any sampling arrangement before shipment. Qualified personnel should perform electrical checks using the appropriate equipment and procedures.
Retain the approved drawings and supporting documents with the maintenance records. When ordering replacement modules or additional heads later, quote the original configuration and revision. This gives the supplier a concrete reference and reduces the risk of ordering a visually similar but electrically different unit.
Prepare your high-power LED traffic light enquiry
Send GAOQIAO your required indication, 200mm or 300mm size, supply version, quantity and destination. Add the mounting drawing and the relevant project requirements, including optical documentation or controller functions that must be reviewed.
Browse the high-power LED traffic light range and the current model specification comparison, then request a configuration review or email sky-sale@njgq.net. Final specifications and supplied components should be confirmed against the agreed quotation and product documentation.