1. The default baud rate of this module is 9600<br> 2. The power supply voltage is 3.3V-5V (can be directly connected to 5V or 3.3V power supply, core operating voltage 3.3V)<br> Can be directly connected to 3.3V or 5V microcontroller 10 for wiring details:<br> 1. VCC power supply (3.3V-5.0V)<br> 2. GND grounding<br> 3. TXD module serial port sending pin (TTL level, cannot be directly connected to RS232 level!), can be connected to the RXD of the microcontroller<br> 4. RXD module serial port receiving pin (TTL level, cannot be directly connected to RS232 level!), can be connected to the TXD of the microcontroller<br> 5. clock pulse output pin<br> During the processing of this product, the ceramic antenna may be worn out, which is normal. The product is new. If you mind, please do not place an order.<br> Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use.<br> Type:NEO-7M<br> Colour:Random Color(Color is random, no specification is accepted)<br> Material:PCB<br> Package Contents:<br> 1 * GPS Module<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store