SKILL DAY NIGHT SENSOR RETROFIT automatically Switch ON and OFF any Electrical Device such as Light Bulb , Fan , Motor , Pump Motor or any Other Electrical Device by Sensing Natural Light of Day and Night. This Sensor Device is Retrofit will fit in any Bulb Holder and Make Bulb Holder Supply in SMART SWITCH. Light Sensing can be adjusted by LIGHT SENSOR CONTROL VOLUME . It is useful for LED Bulb , CFL Bulb ,Tube Light , Street Light , Garden Light , Parking Light , Corridor Light, Gate Bulb , Roof Light , Sign Board Light , Name Plate Light , Hording Board Light . By Put Holder Adapter , We may use Supply for Operate Fan , Exhaust Fan , Pump Motor in DAY or NIGHT by selecting sliding Switch on that side .It is useful for Safety and Security for Good looking , Easy Walking , and Working in House , Building Areas , Open Area , Holiday Homes , Ware Houses , Factory Areas , Farm Houses, Hotel Areas, Schools , Colleges , Hospitals, Shops , Offices, Street Lights and any other Enterprises for Automation to ON and OFF any Electrical Device by sensing Evening and Morning Natural Light.