A good projector tender specification describes the result you need — image size, brightness in the actual room, resolution, reliability and service — in measurable terms, and leaves suppliers free to meet it with any compliant product. Specifications that copy one brand's datasheet invite complaints and higher prices; specifications with vague terms invite low-quality offers. This guide shows how to write requirements that are measurable, fair and hard to game, and ends with a clause-by-clause template.
Key takeaways
- Specify performance and test methods, not brand features — and add 'or equivalent' wherever a standard or product is named.
- Ask for ANSI or ISO/IEC 21118 brightness, native resolution and light-source life with its definition.
- Write acceptance testing into the tender: a pre-shipment sample check and an on-site check before final payment.
- Evaluate on total value — price, compliance, warranty, service and delivery — not price alone.
Performance-based vs brand-based specifications
Public procurement rules in many countries require specifications to be non-discriminatory: they should describe functional and performance requirements rather than a particular make. Where a product or standard is named for clarity, add 'or equivalent'. Performance-based specifications also protect the buyer — they keep competition open and make it easier to reject offers that do not perform.
| Avoid | Write instead |
|---|---|
| 'Brand X model Y or similar' | Minimum 3,800 ANSI lumens, native WXGA, throw ratio ≤ 0.25:1 |
| 'High brightness' | Minimum brightness in ANSI lumens, measured per ISO/IEC 21118 or ANSI method |
| 'Supports 4K' | Native resolution of the imaging device, and supported input signals listed separately |
| 'Long-life light source' | Laser light source, rated life ≥ 20,000 h to 50% brightness in normal mode |
| 'Quiet' | Fan noise ≤ 32 dB in the operating mode used, with measurement method |
Core technical requirements
- Brightness — minimum ANSI lumens in the mode the room will use; calculate from the room as in the lumens guide.
- Resolution and aspect ratio — native resolution matched to the sources (most laptops are 16:10); see the resolution guide.
- Optics — throw ratio range for the planned mounting distance, lens shift where off-axis mounting is expected; see the throw distance guide.
- Light source — laser, rated life and its definition, light-source warranty period.
- Inputs and control — number and type of video inputs, LAN/RS-232 control, compatibility with the control system in use.
- Environment — operating temperature range, dust protection of the optical engine, installation orientations supported.
Documentation and compliance requirements
- Certificates and test reports required in your country (for example CE/FCC/RoHS, safety and EMC), in the name of the manufacturer shown on the label.
- ISO 9001 (or equivalent) certificate of the manufacturing site.
- Laser and photobiological safety documentation for laser projectors.
- Datasheet stating native resolution and ANSI brightness, plus user manual in the required language.
- Manufacturer's authorisation letter if the bidder is a distributor or integrator.
Installation, training and service levels
Many tender disputes come from scope left unwritten. State who supplies and installs mounts, screens or boards, cabling and control; who calibrates interactive functions; and what training is included. Then define service levels:
- Warranty period for the projector and, separately, for the light source.
- Response and repair or replacement times, and where spare units are held.
- Spare-parts availability for a stated number of years after delivery.
- Dead-on-arrival procedure and replacement timeline.
Acceptance testing
- Sample approval — the winning bidder supplies a sample for testing against the specification before mass delivery.
- Pre-shipment inspection — a sample from the production lot is inspected (by the buyer or a third party) at an agreed AQL level.
- Site acceptance — on installation, check brightness, image, interactive function and control in a defined share of rooms.
- Final payment — linked to successful site acceptance and delivery of documentation.
Evaluation criteria
Lowest price among compliant offers is simple but rewards cutting corners on service and warranty. Many authorities use a best-value approach — in EU terms, the most economically advantageous tender — scoring price together with quality and service. A balanced scheme might weight:
| Criterion | Example weighting | Evidence requested |
|---|---|---|
| Price (including installation) | 50–60% | Priced bill of quantities |
| Technical compliance and quality | 20–30% | Datasheets, test reports, sample test |
| Warranty and service | 10–15% | Service plan, local partners, spare stock |
| Delivery plan | 5–10% | Schedule by phase, logistics plan |
Illustrative weightings — follow your procurement rules.
Copy-ready specification template
Adapt the values to your rooms. Square brackets in your own document mark items to fill in.
| Clause | Requirement (example for a 100" interactive classroom) |
|---|---|
| Display technology | Laser light source; DLP or 3LCD (or equivalent) |
| Brightness | ≥ 3,800 ANSI lumens (ISO/IEC 21118 or ANSI) in normal mode |
| Native resolution | WXGA 1280 × 800 or higher, 16:10 |
| Throw | 100" image from ≤ 0.6 m (throw ratio ≤ 0.25:1); wall-mount arm included |
| Light-source life | ≥ 20,000 h to 50% brightness (normal mode) |
| Interactivity | Finger touch, ≥ 10 touch points, software licence for the school included |
| Inputs and control | ≥ 2 HDMI, LAN, RS-232; audio output |
| Noise | ≤ 32 dB in normal mode |
| Compliance | CE / FCC / RoHS as applicable; ISO 9001 manufacturer |
| Warranty | [x] years projector, [x] years / [x] h light source; [x]-day replacement |
| Acceptance | Sample approval, pre-shipment inspection, site acceptance in [x]% of rooms |
Matching products: PSE-4200UST for interactive classrooms and PSE-3800UST for non-interactive lots. For meeting rooms, see the conference room guide.
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Frequently asked questions
Questions on this topic
Can a tender name a projector brand?
Which brightness standard should a tender reference?
How do I stop bidders offering non-compliant products?
Should warranty be evaluated or just required?
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