In the case of the locator inserted into the car lighter socket (DS / ZAP), after inserting the device into the socket, the red LED will light up several times, indicating that the device is receiving power. The red LED informs about searching for cellular network signal and GPS satellite signal. After finding the signal of the cellular network and the GPS system, the LED will start blinking green. More information can be found in the DS / ZAP manual: https://datasystem.pl/pl/instrukcje-montazu