Headline figures are easy to publish and hard to compare. These questions help you check what a supplier is actually proposing and who is responsible for each part of the project, whichever supplier you choose.
The exact configuration
Ask for the model name, pixel pitch, cabinet size and the full cabinet layout for your canvas. Check that the datasheet matches the proposed model rather than a product family.
Documents for your destination
Ask which certificates and test reports apply to the proposed model and your destination country, and request copies before ordering.
Control, spares and service
Confirm the sending and receiving equipment, the spare modules and power supplies included, and how components are replaced on site.
Delivery and responsibilities
Ask for the delivery terms, packaging, estimated production time and a clear split of responsibilities for structure, electrical work, installation and commissioning.
Warranty and support
Ask what the warranty covers and excludes, how faults are reported, how replacement parts are shipped and who pays for transport.