-FAQ-1.Q:Are you manufactory or trade company? A:We are the 100% manufactory specialized in auto alarm field. Founded in 1994, our main product are auto security systems, parking sensor systems, pow

Questions & AnswersQ: Why the DVR displays that the SD card is full?A: 1) If a new TF card is first used for the DVR, it will be reminded that the TF card should be formatted first. 2) Check if the

HOW TO CHOOSE A TPMS ( tire pressure monitoring system )?①Solar panels and materials SPY —— Made of inported ABS+PC synthetic materials,not only can resist high tempreature,but also has better anti a