Parameters:
- Module with ceramic active antenna, signal super (with amplification, filtering) 
- EEPROM power down to save the configuration parameter data 
- There are LED lights 
- High quality Immersion Gold PCB 
- Antenna size 25 * 25mm 
- Module Size 25mm * 35mm 
- Installation diameter 3mm 
- Supply voltage 3v-5v 
- The default baud rate: 9600