Taxi Moving Sign

Taxi Moving Sign Function: 1. Flash alert message when it is needed, and send HELP message to the named cell. 2. Advertising message by wireless transfer 3. Brightness adjusted automatically 4. Support all kinds of GPS ports 5. Message off when back the car Advantage: 1. Timely message 2. Cover the whole city everywhere 3. Used day and night 4. Update the ad. same time by GPRS 5. Low investment and high reward 6. Easy operation by cell, GPRS and net