Interactive Controllers: Fulfilling the need for user convenience, saving energy and centralized control at the same time.

For use in hallways, elevator lobbies, restrooms, meeting rooms, small offices, classrooms, and similar small public spaces. These are all spaces that have people going in and out, but not staying for long, each requires some form of user control.


The control for the user needs to be close by the public space, most often they are placed on a wall that is conspicious and easily accessible, or control could also be in the form of a sensor. Which is the reason why this is called interactive control.

Peak Period: Centralized control takes over.

Off-Peak Period: Local sensors take over, centralized control takes a back seat.

Module Types

Small Rooms

Small Rooms
LT3000(built-in relay)

Large Rooms

Large Rooms
LT3384(built-in relay) or LT2544(external relay)


Operating Modes

Multiple Access Demo

Control Modules

During peak period, centralized control presides; but during off-peak periods, control is done automatically using local sensors, or manually with wall switches.

Interactive energy saving mode makes sure of the software logic in the controller to make use of sensor and wall switch in order to satisfy the need for user convenience and central control.

Local Switch Demo

(1) Passageways

The lights can be controlled at any switch, and will turn off automatically after a certain delay if the user forgets.

Along the length of the hallway, multiple switches are installed which are linked together using only a pair of signal wires.

  1. Peak Period: Centralized control takes over.
  2. Off-Peak Period: User can switch on the lights from any of the switches along the hallway, if they forget, the controller will turn them off after 5 minutes.

Hallways, Stairwells, Basement Parking

(2) Rooms

Turn on the lights manually, if the user forgets they turn off automatically after a certain delay.

Centralized Control + Room Control (Classic Wall Switch or Ceiling Sensor)
  1. Peak Period: Lights are forcibly controlled from the centralized control, local controls have no effect.
  2. Off-Peak Period: Local controls are authorized, lights must be turned on manually when the user enters the room, if they leave and forget, the sensor detects their absence and then turns the lights off in their stead after a delay of 10 minutes.

Meeting room, reading rooms, small offices, research rooms.

(3) Sensors

Peak Period: Central control forcibly turns the lights on or off, local sensors are ineffective.

Off-Peak Period: Control reverts to local sensors. People come, lights on, people leave, lights off.

Central + Local Sensor Control

Basement parking, showrooms, hallways, restrooms

(4) Large Spaces

Manual control, delayed auto off with all on/off at the doorway.

Multiple digital switches are placed along the hallway, sensors are installed in the ceiling, a digital switch is installed at the doorway.

  1. Local site: Lights can be turned on any place there is a switch, if there is no activity after 5 minutes, the lights are turned off automatically.
  2. Doorway switch: Allows for turning all the lights on or off together.

Warehouses, open offices.

Space Energy Savings

By combining sensors and switches, the following energy savings can be gained. Refer to EPA Energy Efficiency Report

Small offices

Small offices(13~50%)



Meeting rooms

Meeting Rooms(22~65%)