The device is controlled by a microcontroller. In the software there is a small delay to avoid pests and abrupt micro-changes of lighting. The circuit also has an adjustable time of up to 5 minutes, so that if we place it in a shop window and there is a traffic light nearby we can adjust the time so that the light switch does not open and close from the cars that will stop at the traffic light. Of course we can cancel this timer if we want. For greater ease of adjustment there is also an LED for visual indication of the status of the relay. We can also supply it with 220V with a small power supply. The output can be turned on and off at any voltage up to 240VAC. 
 GREEK PRODUCT.