Description: BS-280B GPS module, integrated with internal 4M Flash, can save the data configuration, you can change the baud rate, output frequency, output protocol, and save the configuration, the data will not be lost even if powered off. Feature: 1. The module adopts built-in active 28 secondary db gain amplifier active antenna, high signal, high precision. 2. BS-280B is RS232 Level (while BS-280 is TTL level). 3, Please make the GPS antenna towards the sky, to make sure the GPS module will search for the best satellite signal through the antenna. Also, use the GPS module when it's sunny and use it on open roads or squares.