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The EarthTronics EarthConnect Dual-Technology Ceiling Sensor, model ECPIRWLAC (catalog order code 11964), is an indoor, ceiling-mounted occupancy sensor that combines passive infrared (PIR) and ultrasonic sensing. EarthTronics reports coverage of 600 square feet and specifies 120/277VAC input and an 8–20-foot mounting-height range. It is designed for use in an EarthConnect lighting-control system; daylight harvesting and on/off scheduling are described in conjunction with other EarthConnect controllers, not as confirmed standalone functions of the sensor.
For a commercial project, the key question is not only whether the sensor’s coverage and mounting range suit the room. Confirm the compatible controller, fixture or driver, control functions, and installation details for the exact configuration before specifying or ordering it.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteWhat is the EarthConnect Dual-Technology Ceiling Sensor?
It is an EarthTronics Bluetooth mesh ceiling area sensor for commercial lighting controls. The manufacturer identifies the product as the EarthConnect Dual-Technology Ceiling Sensor; its catalog lists model ECPIRWLAC and order code 11964. The June 17, 2025 announcement and the product catalog both identify its two occupancy-sensing technologies—PIR and ultrasonic—and report a coverage area of 600 square feet. See the EarthTronics product announcement and lighting-controls catalog for the published specifications.
The sensor’s role is to detect occupancy and participate in lighting control. It should not be treated as a complete lighting-control system by itself: the manufacturer describes additional functions, including daylight harvesting and scheduling, in conjunction with other EarthConnect controllers. Likewise, support for dimming and color tuning depends on compatible LED drivers and the system configuration. The product description does not establish that every listed function is available in every installation.
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How do PIR and ultrasonic sensing work together?
PIR and ultrasonic are different ways of detecting occupancy. In general, PIR sensing responds to changes in infrared energy associated with movement, while ultrasonic sensing uses reflected sound waves to detect movement. Combining distinct sensing approaches can help a system detect occupancy across more than one kind of movement; however, the supplied product specifications do not explain the ECPIRWLAC’s detection logic, adjustment behavior, or measured accuracy.
EarthTronics says the two technologies work together when movement is detected and positions the sensor as a high-accuracy option. That is the manufacturer’s description, not an independently validated accuracy result. The published 600-square-foot coverage figure is also a manufacturer specification, not a guarantee that every room of that area will be covered equally well. Room shape, obstructions, mounting position, and the particular occupancy pattern matter when laying out a system; obtain application guidance for the actual space rather than treating the area figure as a universal room-size limit.
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What are the published specifications?
| Specification | Published information | What to confirm |
|---|---|---|
| Product identification | EarthConnect Dual-Technology Ceiling Sensor; model ECPIRWLAC; order code 11964 | That the quote, submittal, and delivered product all identify the intended model |
| Sensing technology | PIR plus ultrasonic | Whether the sensing approach suits the room’s use and layout |
| Coverage | 600 square feet, as reported by EarthTronics | Coverage and placement for the actual room geometry and obstructions |
| Input | 120/277VAC | That the project’s electrical supply and installation plan match the device specification |
| Mounting height | 8–20 feet | The intended mounting height and any layout guidance for the space |
| Environmental rating | IP21; described for indoor use | Whether the installation location is suitable for an indoor IP21 device |
| Lighting control | Single-channel and dual-channel LED driver control; dimming and color tuning described | Driver compatibility and the required controller or configuration for each function |
These are the specifications identified in EarthTronics’ announcement and catalog. The announcement specifies 120/277VAC for this sensor. EarthTronics describes 12VDC power options elsewhere in the broader EarthConnect controls ecosystem, but that system-level statement does not mean this sensor accepts 12VDC. Do not substitute a system-wide capability for the input rating of the specific device.
Which lighting functions does it support?
EarthTronics describes the sensor as controlling single-channel and dual-channel LED drivers and supporting dimming and color tuning. It also describes daylight harvesting and on/off scheduling when the sensor is used with other EarthConnect controllers. These distinctions matter when setting expectations: the sensor is a component in a controls ecosystem, while the driver, controller, and configuration determine which functions are available in a given installation.
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For example, a project that only needs occupancy-responsive lighting still needs confirmation of how the sensor joins the control system and which compatible fixtures or drivers it will operate. A project that needs daylight response, time-based scheduling, dimming, or color tuning should identify the required controller and driver combination in the design documents. The available product information does not name every compatible controller or driver, specify a complete system bill of materials, or give a function-by-function compatibility matrix. Ask EarthTronics or the project’s controls supplier to confirm the exact components and capabilities in writing.
EarthConnect is presented by EarthTronics as a commercial lighting-control ecosystem. Its Advanced Lighting Controls page provides system context, but ecosystem-level descriptions should not be read as device-level ratings. In particular, verify power, control compatibility, and environmental suitability against the ECPIRWLAC specification and the project requirements.
How should a project team evaluate fit?
Use the published figures as an initial screening tool, then check the room and system design. The sensor may be a candidate where an indoor ceiling device, 120/277VAC input, a mounting height from 8 to 20 feet, and the reported 600-square-foot coverage align with the project. The following checks help identify mismatches before equipment is specified.
- Confirm the exact device. Put “ECPIRWLAC” and order code “11964” on the equipment schedule or submittal review. Similar product names or references to other EarthConnect sensors are not confirmation of an identical model.
- Check the space. Compare the proposed ceiling location and height with the stated 8–20-foot range. Review room shape, partitions, shelving, and other potential obstructions with the controls designer or supplier. The 600-square-foot figure is reported coverage, not a detailed coverage drawing or assurance for every layout.
- Verify the electrical supply. The product announcement specifies 120/277VAC input. Coordinate that rating with the electrical design and confirm installation requirements from the current manufacturer documentation. Do not infer that the sensor is a 12VDC device from references to other EarthConnect power options.
- Identify the controlled equipment. Confirm whether the design uses single-channel or dual-channel LED drivers and verify that the particular drivers and fixtures are compatible with the intended controls.
- List required behaviors. Separate occupancy response from daylight harvesting, scheduled on/off operation, dimming, and color tuning. Ask which EarthConnect controller and driver configuration enables each function.
- Check the environment. The sensor is rated IP21 and described for indoor use. Confirm suitability for the actual location and conditions; do not assume that the rating makes it suitable for an exposed or wet area.
- Request model-specific setup and installation instructions. Confirm how this model is powered, paired or commissioned, configured, and maintained, and follow the current instructions and applicable electrical requirements. The supplied materials do not establish a complete ECPIRWLAC wiring or commissioning procedure.
What should installers and facility managers know about configuration?
The available EarthConnect app manual is useful for understanding platform concepts, but it does not confirm the ECPIRWLAC’s exact app workflow. The manual, revised December 6, 2023, discusses the CS107D dual-mode ceiling sensor and also names the CS107S. It describes associating a ceiling sensor with a light group and setting trigger or hold conditions, hold time, sensitivity, and a photocell threshold. Those model-specific details must not be assumed to apply to ECPIRWLAC without confirmation.
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The manual also illustrates why configuration should be reviewed against the desired behavior: for the documented CS107D, enabling photocell control means the sensor will not turn lights on until ambient light falls below the configured threshold, even when motion is detected. That is useful platform context, but it is not proof that the ECPIRWLAC exposes identical settings or behaves identically. Consult the EarthConnect App Instruction Manual for its stated model scope and request current, model-specific guidance for ECPIRWLAC.
For handover, facility teams should retain the final device and driver schedule, controller associations, intended lighting behavior, and the approved configuration instructions. Record who is responsible for commissioning and for future setting changes. This reduces confusion when a room’s lights appear to respond differently from the intended schedule or daylight behavior, especially where more than one controller or sensor model is present.
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The published information establishes a clear basic profile but leaves several project-specific questions open. EarthTronics reports 600-square-foot coverage, yet the reviewed materials do not provide an independent coverage test, a comparative accuracy study, or detailed coverage maps. They also do not establish current retail price, stock, a distributor, or the exact app workflow for this model. Treat those as items to verify with the manufacturer or supplier, not as assumed product attributes.
Nor does the product announcement provide enough detail to calculate how many sensors a building needs. A room’s dimensions alone may not determine placement; layout and obstructions should be assessed by the controls designer. Do not multiply a floor area by the published coverage figure and assume that it yields a reliable device count without a layout review.
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Finally, keep the distinction between the sensor and a complete controls solution. A sensor’s sensing technology and input rating do not establish which controller is required, which fixtures can be controlled, or whether scheduling, daylight harvesting, dimming, and color tuning are all available together. Those requirements should be resolved before procurement and documented in the project’s submittals.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is it the right sensor for a commercial project?
ECPIRWLAC is worth evaluating when the project calls for a commercial indoor ceiling sensor with dual PIR/ultrasonic sensing, the reported 600-square-foot coverage, 120/277VAC input, and an 8–20-foot mounting range. Its fit depends on whether the physical room and electrical design align with those specifications and whether the required control functions can be delivered by the selected EarthConnect controllers and compatible LED drivers.
Specify it by its model and order code, verify the layout and device-level requirements, and obtain written confirmation of controller, driver, and commissioning compatibility for the desired functions. That is a more reliable basis for a specification than assuming that every feature of the EarthConnect ecosystem is built into this sensor.
Frequently Asked Questions
What does ECPIRWLAC mean on an EarthTronics submittal?
ECPIRWLAC is the model identifier EarthTronics’ catalog associates with order code 11964. Use both identifiers when checking a quote or submittal so the requested ceiling sensor is not confused with another EarthConnect device.
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Does the EarthConnect ceiling sensor need a hub or gateway?
The supplied product information identifies the sensor as a Bluetooth mesh device and describes some functions as requiring other EarthConnect controllers, but it does not specify a universal hub or gateway requirement. Ask the supplier to identify the controller and network components for the exact lighting behavior and system layout.
Can the sensor be used in a covered outdoor area?
The product announcement gives an IP21 rating and describes the sensor for indoor use. The available specifications do not establish outdoor suitability, even for a covered location, so confirm environmental requirements with EarthTronics before considering that application.
Can I use the CS107D app instructions to commission ECPIRWLAC?
Not as confirmed model-specific instructions: the cited manual names the CS107D and CS107S, not ECPIRWLAC. Its settings can explain some EarthConnect platform concepts, but obtain current commissioning directions for ECPIRWLAC before installation.
