Maestro® Occupancy/Vacancy Sensor C•L® Dimmer - Application Note #480 - Additional Programming, Installation, and Troubleshooting Help

Oct 28, 2026

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Supplemental application note for the Maestro® Occupancy/Vacancy Sensor C•L® Dimmer, providing added guidance beyond the standard instruction sheet. Covers key programming and setup concepts including indicator lights, sensor coverage and how coverage is measured, timeout behavior, sensitivity settings, and multiple Auto-ON modes. Includes advanced programming features such as preset and fade timing, nightlight and trim adjustments, restoring defaults, two-location wiring considerations, ambient light detection, FAQs, troubleshooting notes, and bulb compatibility guidance.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages24

Reading Time1 h 0 min

AccessFree to download

Glossary

Sensor Coverage

Sensor Features in Programming Mode

Timeout

Sensitivity

Auto-ON

Occupied Level

Dimming Features in Advanced Programming Mode

Preset Light Level

Manual Fade ON Time

Manual Fade OFF Time

Delayed Fade to OFF

Nightlight Mode

Low-End Trim

High-End Trim

Restoring Default Settings

Two-Location Applications Using an Existing Switch

Ambient Light Detection (ALD)

How it Works

FAQs

Troubleshooting

Bulb Compatibility

Application Note \#480 Revision B February 2015 Maestro® Occupancy/Vacancy Sensor C•L® Dimmer Additional Programming, Installation, and Troubleshooting Help Maestro® Occupancy/Vacancy Sensor C•L® Dimmer Models MSCL-OP153M; MSCL-OP153MH; MSCL-VP153M; MSCL-VP153MH Overview This document serves as a supplement to the Maestro® Occupancy/Vacancy Sensor C•L® Dimmer instruction sheet. Maestro Sensor Dimmer ® Indicator Lights (IL) 1–7 Lens FASSTM Front Accessible Service Switch Glossary ............................ 2 Sensor Coverage ....................... 3 Sensor Features in Programming Mode ............ 4 Dimming Features in Advanced Programming Mode ..... 6 Programming Mode ...................... 7 Timeout .......................... 7 Sensitivity ......................... 8 Auto-ON .......................... 8 Occupied Level....................... 8 Advanced Programming Mode ................ 9 Preset Light Level .................... 10 Manual Fade ON Time .................. 12 Manual Fade OFF Time ................. 13 Delayed Fade to OFF................... 14 Nightlight Mode ..................... 15 Low-End Trim ...................... 16 Low-End Trim Shortcut ................ 16 High-End Trim ...................... 17 Restoring Default Settings .................. 18 Two-Location Applications Using an Existing Switch .... 19 Ambient Light Detection (ALD) ................ 21 How it Works ....................... 21 FAQs ........................... 21 Troubleshooting ....................... 22 Bulb Compatibility ...................... 24 Notes: • To replace fixture bulb(s), power may be temporarily disconnected at the light fixture by pulling the FASSTM OUT on the dimmer. • For any procedure other than routine bulb replacement, power MUST be disconnected at the main electrical panel. ® 1 Technical Support — 800.523.9466 Glossary Auto-ON Setting to adjust how the dimmer responds to initial occupancy of the room. Auto-ON: ALD Setting in which the dimmer turns ON upon initial occupancy of the room only if there is not enough ambient light. Based on the user’s interactions with the button, the Maestro® Sensor Dimmer will learn the user’s preference for when it should turn ON once motion is detected. (Also called Ambient Light Detect mode.) Auto-ON: Disabled Setting where the dimmer will turn ON only when the button is pressed, but will still turn OFF automatically when the room is vacated. (Also called Vacancy mode.) Auto-ON: Enabled Default setting for the Maestro® Sensor Dimmer. The sensor automatically turns ON upon initial occupancy of the room, and turns OFF when the room is vacated. (Also called Occupancy mode.) Auto-ON: OWO Setting in which the lights remain OFF even as the room continues to be occupied. (Also called OFF‑While‑Occupied mode.) Default Setting Original preset options to which the dimmer is programmed before initial use. FASSTM Front Accessable Service Switch is the tab at bottom of Maestro® Sensor Dimmer, required to be pulled out before replacing light bulb(s) and entering all programming modes. (Also called Air Gap.) High-End Trim . . . . . . . . . . An adjustable feature that allows the user to set the brightest achievable light level in the dimmer. Indicator Lights (ILs) LEDs on dimmer that show current light level and are also used to indicate programming status. Low-End Trim . . . . . . . . . . Dimmest stable light level to which the dimmer can be adjusted. Load The light bulb(s) that the dimmer is controlling. Locked Preset . . . . . . . . . . A programmable light level to which the dimmer will illuminate with a single press of the T button. Occupied Level A programmable light level to which the dimmer will illuminate once occupancy has been detected. Occupied Level: 100% The default set point for occupied level in which the Maestro® Sensor Dimmer turns O

FAQs

What is the purpose of this supplemental application note for the Maestro® Sensor Dimmer?

It supplements the Maestro® Occupancy/Vacancy Sensor C•L® Dimmer instruction sheet with additional programming, installation, and troubleshooting help.

How does Auto-ON affect when the dimmer turns lights ON?

Auto-ON controls the dimmer response to initial occupancy, including modes that depend on ambient light and modes that keep lights OFF while occupied.

How is sensor coverage determined and what affects it?

The document provides a coverage area and test grid details, including major vs. minor motion coverage and the sensor coverage angle, which together describe how motion is detected across an area.

Oct 28, 2026

Upload by Stanley