To choose an OEM human presence sensor, start with the space it must monitor, the smallest movement it needs to detect, and the control system it must communicate with. Then compare sensing technology, mounting position, detection coverage, output or protocol, configuration options, and supplier support against those requirements. A sensor that works well in a corridor may not reliably detect a seated person at a desk, so test the intended use case rather than selecting on a headline range alone.
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At Multi-IR, we recommend documenting the application before requesting an OEM quotation. Share a layout, ceiling height, expected occupancy pattern, lighting or automation interface, and target behaviors. This gives our team a practical basis for discussing product fit, customization scope, and validation needs without assuming that every sensor or integration is suitable for every project.
Identify whether the sensor will serve a private office, meeting room, classroom, open-plan area, corridor, or another space. Note the room dimensions, mounting location, ceiling height, furniture, partitions, and likely occupant positions. These details matter because obstacles, distance, mounting angle, and movement direction can all affect what a sensor detects.
Be precise about what “presence” means for your project. In a meeting room, the system may need to keep lights on while people sit nearly still; in a corridor, detecting movement through the area may be sufficient. If the requirement is subtle movement at a desk, ask the supplier to explain how the proposed technology and installation address that specific condition.
Use preliminary targets to guide selection, not as a substitute for model specifications or onsite testing. For example, a project team might plan around a ceiling height of 2.7 m, a 5 m detection radius, and a 10-minute vacancy delay. These are illustrative design inputs, not guaranteed performance figures; confirm that the chosen model supports the required installation and settings.
Also define the desired response when a person enters, remains still, or leaves. Specify whether lights should turn on automatically, dim after inactivity, or switch off after a delay. For building automation, document any additional events or outputs the controller must receive, and confirm how the sensor communicates them.
Human presence sensors may use different sensing approaches, and the appropriate choice depends on the detection task and installation conditions. Passive infrared (PIR) sensors detect changes in infrared energy associated with movement; their performance can depend on movement across the sensor’s detection zones and on the environment. Radar-based sensors, including certain mmWave designs, may be considered when a project requires detection of smaller movements, but actual performance depends on product design, configuration, room conditions, and placement.
Do not assume that a technology label guarantees a particular result. Ask for the model’s detection specifications, recommended mounting conditions, adjustment options, and known limitations. Where the space includes glass partitions, fans, moving equipment, direct sunlight, or nearby areas that should not trigger the lights, ask how the sensor is intended to be installed and tested.
Compare the stated detection area with the floor plan and mounting position. A coverage figure may depend on mounting height, orientation, sensitivity settings, and the type of movement used in the test, so request the relevant conditions behind the specification. Confirm whether one sensor can cover the target zone or whether the design requires multiple units.
Ask the supplier for guidance on blind spots and boundary control. In open-plan spaces, overlapping detection zones may create unwanted triggers, while furniture or partitions can block a sensor’s view. A sample test in the intended position is more useful than relying only on a nominal range when the installation has unusual geometry.
List the interface requirements before choosing an OEM model. Depending on the project, the system may need a switched output, a dimming control, or communication with a building management or smart-home controller. Do not infer compatibility from a product category: confirm the exact electrical output, communication method, wiring arrangement, and supported functions in the model documentation.
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Check the sensor’s supply requirements, load limits where applicable, and installation constraints with the project electrician or controls integrator. If the sensor is intended to work with a third-party gateway or controller, verify the integration using the actual hardware and firmware versions planned for deployment. This helps identify configuration or interoperability issues before a larger order.
Document the behavior required for entry, continued occupancy, and vacancy. The project may need separate settings for sensitivity, hold time, daylight response, or manual override, but available features vary by model. Ask which settings are adjustable by the installer, which can be set during production, and whether configuration can be changed after installation.
For lighting applications, define how presence detection interacts with ambient light and user controls. For building automation, clarify whether the sensor must report occupancy status continuously or simply trigger an event. A clear sequence of operations gives the supplier and integrator a shared basis for evaluating the product.
OEM requirements can include housing design, labeling, packaging, cable or connector choices, firmware behavior, and documentation. Ask which items are available for the proposed model, what requires engineering review, and whether a change affects tooling, minimum order quantity, or lead time. Request written confirmation of the agreed specifications before approving samples or production.
As an OEM human presence sensor supplier, Multi-IR can discuss the application, review your technical requirements, and clarify the available customization scope for a suitable product. We encourage buyers to provide target markets, installation details, interface requirements, and expected order volumes early in the conversation. The exact options and project terms should be confirmed for the specific model and order.
Request the current datasheet, installation instructions, wiring information, and any available test or compliance documentation relevant to your destination market. Check that model numbers and revisions are consistent across samples, quotations, and documents. Do not treat a general statement about a product family as confirmation that a particular configuration meets a project’s requirements.
Discuss how incoming materials, assembly, functional checks, and batch identification are handled. Ask what inspection records can be provided and how product changes are communicated. These questions help procurement teams assess traceability and supplier communication without relying on unsupported quality claims.
A frequent mistake is choosing by maximum range without checking the movement type, mounting conditions, or coverage shape behind that figure. Another is assuming that “presence sensor” means the same level of still-person detection across different models. Ask for the precise specification and test against the actual occupancy scenario.
Buyers can also overlook integration details until installation, when wiring, protocol, or controller behavior becomes difficult to change. Share the interface requirements and control sequence before sampling. Finally, avoid approving a production sample based only on appearance; verify detection, output behavior, and configuration in the intended setup.
The right OEM human presence sensor for smart lighting and building automation is the model that meets the project’s detection goal, fits the space, integrates with the control system, and can be supplied with clearly documented requirements. Begin with a room plan and measurable targets, compare technology and interfaces, and confirm OEM options and commercial terms with the supplier. Then test a representative sample under realistic conditions before committing to production.
To discuss an OEM project with Multi-IR, prepare your application details, preferred sensing behavior, installation conditions, control interface, and estimated quantity. Our team can use that information to review potential product fit and explain the available next steps for samples, customization, and quotation.
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