1. Introduction
The Lutron Maestro Motion Sensor Light Switch (model MS-OPS2-WH) is designed to automatically control lighting based on occupancy and ambient light levels. This single-pole switch offers convenience and energy savings by turning lights on when a room is entered and off when it is vacated. It is compatible with various bulb types, including CFL, LED, incandescent, halogen, and electronic low voltage.
2. Safety Precautions
WARNING: Risk of Electric Shock. Improper installation can result in serious injury or death. Always turn off power at the circuit breaker or fuse box before installing or servicing this device. Consult a qualified electrician if you are unsure about any part of the installation process. Use this device with copper or copper-clad wire only.
- Turn off power at the circuit breaker before installation.
- Ensure all wiring connections are secure.
- Do not install if the product appears damaged.
- For indoor use only.
3. Package Contents
- 1x Lutron Maestro MS-OPS2-WH Motion Sensor Switch
- Wiring hardware (wire nuts, screws)
- Instruction sheet
Note: A coordinating wall plate is sold separately.
4. Specifications
| Operation Mode | Automatically, Off |
| Current Rating | 2 Amps |
| Operating Voltage | 120 Volts |
| Circuit Type | 1-way (Single-Pole) |
| Compatible Bulb Types | 150W CFL/LED, 250W Incandescent/Halogen/ELV, 200W MLV, 2A Ballasts |
| Dimensions (L x W x H) | 4.2 x 2 x 1.75 inches (119 x 75 x 30 mm) |
| Color | White |
5. Setup and Installation
Installation typically takes around 15 minutes. Follow these steps carefully:
- Turn Off Power: Locate the circuit breaker or fuse box that controls the light switch you are replacing. Turn off the power to that circuit. Verify the power is off using a voltage tester.
- Remove Existing Switch: Carefully remove the wall plate and unscrew the existing switch from the wall box. Disconnect the wires from the old switch.
- Wire the Maestro Switch: The Maestro switch requires a ground wire connection. If no neutral wire is present in your wall box, the switch can be installed using the ground wire. Connect the wires as follows:
- Connect the green ground wire from the Maestro switch to the bare copper or green ground wire in the wall box.
- Connect the black wire from the Maestro switch to the incoming hot wire in the wall box.
- Connect the remaining black wire from the Maestro switch to the load wire (going to the light fixture).
- If a neutral wire (typically white) is present in your wall box, connect the blue wire from the Maestro switch to the neutral bundle. If no neutral is present, cap off the blue wire.
Figure 1: Side view of the Maestro switch showing wiring connections. 
Figure 2: Back view of the Maestro switch, illustrating wire terminals. - Mount the Switch: Carefully push the wired switch into the wall box. Secure it with the provided screws.
- Install Wall Plate: Attach a compatible decorator-style wall plate (sold separately) over the switch.
- Restore Power: Turn the power back on at the circuit breaker.
6. Operating Instructions
6.1. Manual Control
Press the large Tap Switch button (top part of the switch) to manually turn the lights ON or OFF. The sensor will resume automatic operation after a manual override.
6.2. Operating Modes
The Maestro switch supports multiple operating modes. To change modes, remove the wall plate to access the small programming button on the side of the switch. Press and hold the programming button until the indicator light flashes to cycle through modes.
- Occupancy Mode (Auto ON, Auto OFF): Lights turn on automatically when motion is detected and turn off automatically after the room is vacated and the set timeout period expires. This is the default mode.
- Vacancy Mode (Manual ON, Auto OFF): Lights must be turned on manually by pressing the Tap Switch. They will turn off automatically after the room is vacated and the set timeout period expires.
- Daylight Sensing: The sensor measures ambient light. If sufficient natural light is present, the lights will not turn on automatically, even if motion is detected. This feature helps save energy by preventing lights from turning on unnecessarily.
6.3. Adjusting Timeout Settings
The switch can be programmed to turn off lights after 1, 5, 15, or 30 minutes of no occupancy. To adjust this setting, press and hold the large Tap Switch button until the indicator light flashes a specific number of times corresponding to the desired timeout:
- 1 flash: 1 minute timeout
- 2 flashes: 5 minute timeout
- 3 flashes: 15 minute timeout
- 4 flashes: 30 minute timeout
6.4. Adjusting Motion Sensitivity
The motion sensor's sensitivity can be adjusted. To do this, simultaneously press and hold both the large Tap Switch button and the small programming button on the side of the switch. The indicator light will flash to confirm the change between high and low sensitivity settings.
7. Maintenance
To clean the switch, wipe it with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the sensor lens is clear of dust and obstructions for optimal performance.
8. Troubleshooting
- Lights do not turn on:
- Check if the circuit breaker is ON.
- Ensure all wiring connections are secure.
- Verify the operating mode is set to Occupancy (Auto ON).
- Check if Daylight Sensing is active and there is sufficient ambient light.
- Lights turn off too quickly/slowly:
- Adjust the timeout setting as described in Section 6.3.
- Ensure the sensor is not obstructed and has a clear view of the room.
- Lights turn on unexpectedly:
- Adjust the motion sensitivity as described in Section 6.4.
- Ensure the sensor is not detecting motion from outside the intended area.
9. Warranty and Support
The Lutron Maestro Motion Sensor Light Switch comes with a 10-year warranty upon product registration. A 5-year warranty is provided without registration. For technical assistance or further information, please refer to the official Lutron support channels.
