ARC-044: 44-Key Installer Remote User Guide

The ARC-044 is a specialized infrared remote control for an installer or lighting commissioner to remotely configure an LC2 lighting controller after it has been installed on the ceiling.

Most of the parameters that can be configured using the ALEC Mobile App via the USB port can also be changed using special keys in this IR remote controller. However, unlike the ALEC Mobile App that can read back all the settings from the controller, make changes and write back the new settings, the IR remote setup is a one-way configuration process. You can still get visual feedback during configuration process by observing the green LED status indicator (normally used as sensing LED) on the LC2 controller as shown below:


The four buttons on the lower left corner of the ARC-044 are used for controlling the light. Pressing the "Light OFF" button allows you to manually turn OFF the light and put the LC2 in "manual override" mode for up to 8 hours. During the manual override period, the light will not respond to occupancy sensing or daylight conditions. The green LED status indicator will blink once every second while the controller is in manual override mode.

Press the "Light ON" button will turn ON the light. It also cancels the manual override mode and put the lighting controller back in auto mode. The green LED status indicator will resume its normal function as an indicator for sensing occupant.

You can use the two DIMMING buttons to visually set the "Working Brightness" of the light. Each press of the button increases or decreases the light level by 5%. If you press and hold the DIM+ button then the light will gradually increase to the Maximum Brightness setting. If you press and hold the DIM- button, the light will decrease gradually to the manual minimum brightness setting. When you have found your comfortable Working Brightness setting release the button and the new setting will be memorized by the controller. The Working Brightness is the light level that the fixture will be brightened to when it senses the occupants.

If daylight harvesting is enabled (default), the lighting controller will also remembers the actual brightness (using its integrated lux sensor) when the Working Brightness setting is changed.

When a light is already in dimmed or OFF state after vacancy time-out, then when LC2 senses the occupant it will initially brighten the light to the preset Working Brightness level. Three seconds after it has reached the preset Working Brightness, the daylight harvesting control will take effect and continuously compare the actual brightness of the space against the memorized brightness. If the space is brighter than it remembers (most likely due to daylight) the lighting controller will automatically dim the artificial light in order to maintain memorized brightness for the space. Likewise when the space starts to become darker LC2 will brighten the artificial light so that occupant will still get the same desired brightness

Note: You can also set the precise working brightness level to 1% resolution using the "Working %" button in the "Advanced Settings" section of the IR remote.


The top row of buttons set up the LC2 controller to use pre-set profiles similar to what you can define using the ALEC mobile app. It is one-button commissioning for the most common application types. By default these preset profiles use the following settings. You can make further changes (such as changing the vacancy light level, time-out etc using the quick settings or the advanced settings buttons) after selecting the preset profile.

Note: The working brightness, daylight and occupancy enable/disable settings are not changed by pressing the Preset keys.

Stairwell2 min25%15s10%1.5s5.0s
Carpark10 min25%2min15%1.5s5.0s
Enclosed Space   15 min25%5min0%1.5s5.0s
Open Office15 min50%5min25%5.0s10.0s


The 2nd and 3rd rows provides the some of the commonly used settings during commissioning. Simply press the corresponding button to select the vacancy time-out period and the brightness that you want the light to be dimmed to after the vacancy time-out and holding delay time-out.

Note: If you set the vacancy brightness (including 0%, which means to turn off the light) to be lower than the holding brightness , the light will first be dimmed to the “Holding brightness”. It will remain at the “Holding brightness” for for a time period defined by the “Holding Delay” before finally reaching the “Vacancy brightness”.



We recommend turning OFF the light using the OFF button before setting a parameter. Doing so gives you the confidence that the changes you are making are for a specific light and the green LED indicator on the lighting controller is also easier to observe when the main light is OFF.

1) Press a button (e.g. "Vacancy %")

2) The green LED stays fully bright for up to 15 seconds. Time-out if no entry.

3) Now enter the number using the numeric keypad (e.g. press 2 and then press 5 for 25%)

4) The green LED turns OFF for 0.2s when a key is pressed and back ON again.

5) Press Enter key to complete the number entry.

6) If accepted the LED will blink rapidly a few times and it goes back to normal function of indicating occupancy sensed

7) If rejected the green LED will be turned OFF and then it goes back to normal function of indicating occupancy sensed

8) During numeric entry the user can press the “Cancel” button to cancel the entry. The green LED goes OFF and back to normal function.