1. The default baud rate for this module is 9600. 2. The power supply voltage is 3.3V-5V (can be directly connected to a 5V or 3.3V power supply, the core operating voltage is 3.3V). Can be directly connected to a 3.3V or 5V microcontroller. 10 Wiring Details: 1. VCC power supply (3.3V-5.0V) 2. GND grounding 3. TXD module serial port transmit pin (TTL level, cannot be directly connected to RS232 level!), can be connected to the microcontroller's RXD. 4. RXD module serial port receive pin (TTL level, cannot be directly connected to RS232 level!), can be connected to the microcontroller's TXD. 5. Clock pulse output pin. During the processing of this product, the ceramic antenna may wear out, which is normal. The product is new. If you mind, please do not place an order. Due to different batches, there may be differences in product appearance, color, and printed text, which do not affect the use. Type: NEO-8M Color: Random Color (Color is random, no specification accepted) Material: PCB Package Contents: 1 * GPS Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement error allowed is +/- 1-3 cm.