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CS107D Dual-Technology Sensor Configuration

Overview

The CS107D is a dual-technology ceiling sensor combining PIR (Passive Infrared) and ultrasonic detection. This provides higher accuracy and wider coverage than single-technology sensors, with approximately 600 square feet of room coverage.

Dual-Technology Sensing

PIR (Passive Infrared)

  • Detects body heat
  • Excellent for detecting people entering a space
  • Less prone to false triggers from air movement
  • May miss small movements

Ultrasonic

  • Emits sound waves and detects motion
  • Detects small movements (typing, writing)
  • Wider coverage area
  • More sensitive to air movement

Combined Benefits

  • Reduced false triggers
  • Comprehensive coverage
  • Configurable trigger/hold logic

A0 vs B1 Series

The CS107D comes in two series with different capabilities:

Feature CS107D.A0 CS107D.B1
Voltage Low voltage 120-277VAC line voltage
Daylight Harvesting No Yes (integrated)
Timer Control Simple hold time T1/T2 timers
Dim Level N/A Configurable
Best For Basic occupancy Advanced control with DLH

Important

Daylight harvesting is not supported on the CS107D.A0. The A0 provides an on/off photocell "Hold-OFF" only (it has no 0-10V dimming output), so it cannot dim lights to maintain a target light level. Daylight harvesting is available on the CS107D.B1 and later; future versions of the CS107D will support daylight harvesting.

Adding a CS107D Sensor

Step-by-Step Instructions

  1. Navigate to the Discover page, then tap Area Sensors.
  2. Tap the + button.
  3. Put the sensor into pairing mode.
  4. Select the sensor when it appears.
  5. Add to your zone.

Configuring the CS107D

Step-by-Step Instructions

  1. On the Discover page, tap Area Sensors, then tap on the CS107D sensor.
  2. Tap the Settings button.
  3. Configure basic settings:
  4. Name: Enter descriptive name
  5. Rated Wattage: Set for relay output load
  6. Group Association: Select light group to control
  7. Tap Next Step for sensor parameters.

Sensitivity Settings

Setting Description
PIR Sensitivity Detection range for heat-based sensing (Low/Med/High)
Ultrasonic Sensitivity Detection range for motion-based sensing (Low/Med/High)

Trigger and Hold Settings

Configure how motion activates and maintains lights:

Option Triggered By Hold On By Best For
PIR PIR only PIR only Reducing false triggers from air
Ultrasonic Ultrasonic only Ultrasonic only Detecting small movements
PIR + Ultrasonic Both required Both required Maximum false trigger reduction
PIR or Ultrasonic Either Either Maximum coverage sensitivity
None Manual only N/A Vacancy mode operation
  1. Tap Save to apply settings.

B1 Series Additional Settings

The CS107D.B1 offers additional configuration:

Setting Description
T1 First time delay (full brightness)
T2 Second time delay (warning phase)
Dim Level Brightness during T2
Daylight Harvesting Automatic dimming based on ambient light
Manual OFF Override Override behavior after manual off

These settings work similarly to integrated fixture sensors.

Daylight Harvesting Settings

Daylight harvesting automatically dims the group's lights based on the ambient light the sensor measures, holding a consistent light level and saving energy as available daylight increases. (Available on the CS107D.B1 and later — not the CS107D.A0.)

To configure daylight harvesting:

  1. In the sensor settings, enable Daylight Harvesting.
  2. Choose one of the three pre-defined strategies that best fits the application, or select Custom to fine-tune the parameters manually.
  3. Tap Send to save the daylight harvesting settings.
  4. Open the Light Dimming settings, set the desired dimming and tuning levels, then tap "A" to capture the current ambient brightness as the daylight-harvesting reference point (auto point).
Setting Description
Enable / Disable Turns daylight harvesting on or off
Strategy One of three pre-defined profiles, or Custom for manual tuning
Custom Parameters Fine-tune the dimming response when a pre-defined strategy doesn't fit the space
Auto Point ("A") Saves the current ambient brightness as the target light level to hold

Note

When the CS107D.B1 is used for daylight harvesting, it performs daylight harvesting for all lights in the associated group — the entire group dims together in response to the sensor's ambient light reading, rather than each fixture adjusting individually. Because the CS107D drives daylight harvesting for the whole group, daylight harvesting must be disabled on every other sensor in that group (including any integrated fixture sensors). Leaving multiple daylight-harvesting sensors active in the same group causes them to conflict and produce erratic dimming.

Choosing Trigger/Hold Modes

PIR Only

  • Use when: Air movement causes false triggers
  • Behavior: Only body heat activates/maintains lights
  • Trade-off: May miss small seated movements

Ultrasonic Only

  • Use when: Detecting small movements is critical
  • Behavior: Sound wave detection activates/maintains lights
  • Trade-off: More sensitive to HVAC air movement

PIR + Ultrasonic (Both Required)

  • Use when: False triggers are a major problem
  • Behavior: Both technologies must detect motion
  • Trade-off: May be slow to respond

PIR or Ultrasonic (Either Works)

  • Use when: Maximum coverage is needed
  • Behavior: Either technology activates/maintains lights
  • Trade-off: More potential for false triggers

After Configuration

After binding the sensor to a group:

  1. Navigate to the Groups page.
  2. Enable Linkage for the associated group.
  3. If linkage was already enabled, disable and re-enable it.

Troubleshooting

Issue Cause Solution
False triggers Ultrasonic too sensitive Switch to PIR only or reduce sensitivity
Missing small movements PIR only mode Add ultrasonic to trigger/hold
Slow response Both required mode Switch to "PIR or Ultrasonic"
No response Sensitivity too low Increase sensitivity

Quick Reference

Action Steps
Add sensor Discover → Area Sensors → + → Pair → Add
Configure Discover → Area Sensors → Tap sensor → Settings → Configure → Save
Set trigger mode Settings → Next Step → Select trigger/hold options
Enable linkage Groups → Select group → Enable Link

Based on Keilton+autani App User Guide v9.8