New alcohol sensor detector shield Shield Technology Co., Ltd. is the latest development of new high-tech products, it can promptly and accurately detect alcohol molecules, the external circuit to change state by driving the amount of change in the amount of information on the status (alarm messages) transmitted Car GPS equipment; and the ability to timely and accurate test to detect alcohol probe short circuit, open circuit conditions, and changes in the amount of state information (warning message) transmitted to board GPS equipment; of alcohol, open and short circuits can be accurate, timely and stable reflected no fluctuations.