Cut Sheet

Explanation of Advanced Dimmer Features
Preset Options:
The user has two options for the preset light level on the Dimmer: Locked Preset and Unlocked Preset.
Locked Preset: When programmed for a locked preset, the dimmer will always turn on to the predetermined
“locked” level anytime the dimmer is turned on with a single tap of the Tap Button.
Unlocked Preset: When programmed for an unlocked preset, the dimmer will turn on to the light level that it was
adjusted to the previous time that the light was on.
“On” Fade Time:
The user has options for how quickly the lights fade up when the dimmer is turned on. These options include fade times
from off to maximum light output in as fast as 0.75 seconds and as slow as 15 seconds.
“Off” Fade Time:
The user has options for how quickly the lights fade down when the dimmer is turned off. These options include fade
times from maximum light output to “Off” as fast as 0.75 seconds and as slow as 15 seconds.
Set Delayed Fade-To-Off:
The user has the option to set the waiting period upon fade-to-off.
Set LED Brightness:
The user has the option to dim or brighten the Maestro Wireless® LEDs to a high or low brightness setting.
Set Low-end Trim:
The user has the option to set a minimum light level.
Set High-end Trim:
The user has the option to set a maximum light level.
Unaffected Dimmer/Switch:
The user has the option of associating a Radio Powr Savr
TM occupancy sensor to multiple Maestro Wireless®
dimmers / switches, and set up the system so that only selected loads automatically turn on. Other loads would require
the user to manually turn on the load. When the room is vacant, all loads turn off.
System Configuration Options:
The user has several options for the configuration of the system.
Setting the Product Mode: The user has the option to convert the dimmer to a switch when using CFL, Fluorescent
or Electronic Low-Voltage (ELV) load types. Please note that this mode only applies to MRF2-3PD and MRF2-3LD
products.
Vacancy Light Level Preset: The user has the option to set a preset light level when the space is vacant. This
preset light level can be adjusted from the lowest light level to 50% of the load.
Overriding Daylighting Timers: The user has the option to override the normal operation of daylighting in the
system when using a daylight sensor. By default when this option is disabled the override period is two hours for
which the daylight sensor will have no impact. When this option is enabled the daylight sensor will continuously
impact the lighting level regardless of user interaction.
Overriding Daylighting Mode: The user has the option to allow the daylight sensor to automatically turn the lights
on without the need for an occupancy sensor when this option is enabled. By default the option is disabled and the
lights will only turn on with a manual button press or an occupancy sensor input.
3 Technical Support — 1.844.LUTRON1
Application Note #370