RPD3-01
Real Presence Sensor, 24 GHz
Overview of the device
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Key Features
Advanced 24 GHz millimeter-wave radar sensor with orthogonal high-gain antenna and FMCW modulation for ultra-precise human presence detection, including micro movements such as breathing
Lifebeing Presence Detection, delivering reliable Presence/Absence output even for stationary occupants
Detects major, minor, and micro motion with highly coincident coverage, up to 6–8 m maximum diameter, ensuring consistent sensing across the entire space
A round radiation pattern enables full-room coverage with a single sensor, eliminating blind spots
Ultra-fast response: absence → presence < 0.5 s, presence → absence ≥ 15 s for stable automation behavior
Integrated daylight sensor supports daylight-aware lighting and smart scene applications
Powered directly by iNELS BUS, with all parameters configurable via iDM (iNELS Design Manager)
Low RF power output, safe for continuous human exposure, and immune to temperature, humidity, air flow, dust, noise, and ambient light interference
Supports both flush and surface mounting, suitable for smart homes, hotels, offices, and commercial spaces
Provides fast, accurate front-end sensing for occupancy-based automation, HVAC optimization, and energy-saving control strategies.
Device Description
Connection/ Wiring Diagram
Programming in iDM
Introduction
iNELS Design Manager, or IDM3, is for programming iNELS units. This software serves as the platform for configuring device parameters, defining functions, and executing the programming required for iNELS units.
Device parameters, such as sensor range and thresholds, backlights, and operational modes, can be easily adjusted within the IDM3.
The process of programming in IDM3 typically involves defining functions and establishing logical connections between different devices. This allows for the creation of automation scenarios and the implementation of intelligent control strategies.
Starting up
Select the "blue control icon" as shown in Fig 1 > Clicking on the option "New project from default template“ allows you to create a new project from a predefined template.
Select the "Device manager" (Fig 1)> Add "New unit "> Select the central unit > Add "New unit">Select the "Internal-Master/ BUS"> Add "New unit "> Add the devices> Click on the devices to see the "Parameters".
Fig 1: iDM Console
Parameters:
Parameters in the iNELS devices refer to the measurable factors or characteristics that define the behavior or performance of the device. These could include electrical properties, physical dimensions, environmental conditions, and various other specifications depending on the type of device.
These are settings specific to individual devices within your automation system.
The specific parameters of the RPD3-01 in the iDM as shown in Fig.2
Clicking on the RPD3-1 (Fig.2), will navigate to selected firmware, unit address, name, and description, along with other parameters as described below
True state button
Time the output must be active to be considered valid
Long state button
Defines threshold for long press / long detection
Used mainly for logic or differentiation, Helps distinguish short vs long events
Hold time
Time the sensor keeps output active after last detection
Unit: seconds
Example: If set to 3 s → after movement stops, output stays ON for 3 seconds
Detection area
Detection radius (in meters): Defines how far the sensor “sees”
Example: 4 m → covers medium room
Light difference threshold (lx): Required change in light (lux) to trigger reaction Prevents switching due to small fluctuations
Sensitivity
Detection sensitivity level: Options: Low / Medium / High
Higher = detects smaller movements Lower = avoids false triggers
Light coefficient: Calibration factor for light measurement Used to fine-tune lux readings
Use LED: Enables status LED on device Useful for testing, usually OFF in production
Presence detection switch: Enables presence detection output Core function (should be ON if used)
Light detection enable: Activates light sensor (lux measurement) Needed for daylight-based automation
Approaching / moving away reporting: Enables directional detection:
approaching
leaving
Pairing action: Used during pairing / commissioning
Factory reset: Resets device to default settings
Sensor Outputs Meaning
1. Light-IN: Measures ambient light level (lux)
2. Presence-DIN: Detects real presence (including micro-movement like breathing
3. Approaching-DIN: Detects if a person is moving towards the sensor.
Moving-Away-DIN: Detects if a person is moving away from the sensor
5. Still-DIN: Detects very small movements (micro-presence)
6. Environmental-AOUT: Output related to environment learning / calibration
7. Status-AOUT: Provides sensor status / analog output
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