Both sides of a hallway are often lined with many rooms such as offices or classrooms, in the evening the hallways needs to be lit, how can one make it convenient for the user and yet avoid the problem of neglecting to turn off the ligths after use.

  • How to make it convenient for the user and save yet on energy?
  • User turns on lights but neglects to turn them off, wasting energy as a result.
  • It is impractical to place multiple sensors all along the hallway as it is too expensive and also prone to malfunction, and also not easy to repair.
  • LED lamps are suited to sensors, as it can damage sensors easily.

Traditional Approach

Lots of Sensors

Lots of sensors
  1. Lots of sensors along the length of hallway, capital cost is high.
  2. People passing through will always trigger the sensors to turn the lights on whether or not that is the intention which results in wasted energy.
  3. Too frequent cycling of the lights results in both the lamps and sensors having reduced lifespans and breaking down faster.
  4. Having both the lighting fixture and sensors installed in a high ceiling results in high maintenance costs.

Lots of Wall Switches

lots of walls switches
  1. Lights remain on for long times without being turned off.
  2. Having staff needing to roam around at night just to turn off the lights is wasted manpower and wasted time.
  3. Turning off the master power to all the lights will work at night, but when turning the lights back on again the next day, the lights that were on the previous night will immediately turn back on.


K20 delayed off smart energy saving switch


Replaces the existing wall switch with this smart energy saving switch.

K86 power supplied on standby, wall switch turns on


Install this energy saving switch in the electrical panel, paired with an accompanying wall switch.

K15 ceiling type sensor paired with wall switch


Ceiling type sensor paired with a push button type wall switch.

K86 Single Channel

Only a single K86 is needed along with multiple button switches for the entire length of the hallway regardless of length.

Button Press Starts Delayed Auto Off

  • Any button along the wall can turn the lights on with the ability for delayed auto off.
  • Any button can also be used to turn off the lights.

K20 Solution

K20 button turns on lights in adjacent areas with auto off

A single button press turns the lights on in the adjacent areas, which then turns off automatically after a certain delay.


Button Advantage: When the person is just passing through and doesn't need the lights to be turned on, they won't press the button to turn on the lights, this not only saves energy but also reduces the wear and tear on both the lamps and the relay.

K25 Single Channel

Multiple button switches with common access can be placed along the wall for the convenience of the user.

Peak Period: Any button switch along the wall can turn the lights on and have it remain on during busy hours, which will turn off automatically at the start of off-peak period, e.g. 6:00pm.

Off-Peak Period (e.g. 6:00pm): Turn on the lights by pressing any of the button switch which will then auto turn off after a certain delay time.

K25 Dual Channel

The lights are divided into two circuits A and B, multiple button switches are placed along the wall for common access for the convenience of the user.

Circuit A:The primary circuit can have a preset time for auto on (e.g. 5:00pm) and a preset time to auto off (e.g. 10:00pm)

Circuit B: Auxiliary circuit which is also set to auto on and off at preset times (same as A). But outside of this period, pressing a button will turn the lights on with delayed auto off ability.

K15 & K24 Sensors

People come, lights turn on; people leave, lights turn off.

K24 wall type sensor & switch

Two types of power source:

  • One type being L/G (live with ground) suitable for retrofitting work.
  • The other type is L/N (live with neutral) suited for new construction.
  • Wide power range supported 120/220/277V。
K15 Ceiling type sensor with wall switch interface

Can make use of wall switches to augment locations that are not easy for sensors to detect.

  • Lights can be switched on manually when needed.
  • After a manual turn on, the lights will still turn off automatically.
  • When the occasion demands it: A long button press can cause the lights to remain on indefinitely.