It can install your existing switch board inside or Outside. Do not need to change any wiring. Use > Rooms Particularly at Halls, Bed Rooms, and Kitchens etc. > Non-reachable range for small kids or Hidden swith boards. > Conference or Auditoriums halls. > Can be operated by physically handicapped persons. > Hospitals, clinics, Restaurants, shops > Automation, Security, Industrial other use. Advantages Prevents children from risk of electric shock and short circuit. System saves unnecessary wiring and switches cost of 2 way switching. Spark less and contact less switching increases switches life. Updated Features > Humming less Fan Speed. > Inbuilt memory remembers last state. >Relay based ckt > Wattage Capacity > Higly durable power supply. >fluctuation free (flickers diffrent lights)