reconverted.

Using this circuit you can communicate with your neighbors wirelessly. Instead of RF signals, light a laser torch is used as the carrier in the circuit. The laser torch can transmit light up to a distance of about 500 meters. The phototransistor of the receiver must be accurately oriented towards the laser beam the torch. If there is any obstruction in the path of the laser beam, no sound will be heard the receiver. comprises condenser -reconverted.

　　　　　 Using this circuit you can communicate with your neighbors wirelessly. Instead of RF signals, light　a laser torch is used as the carrier in the circuit. The laser torch can transmit light up to a distance of about 500 meters. The phototransistor of the receiver must be accurately oriented towards the laser beam　the torch. If there is any obstruction in the path of the laser beam, no sound will be heard　the receiver.　comprises condenser