The M9N GPS uses a multi-constellation GNSS powered by M9N, a parallel GNSS receiver that can receive and track multiple GNSS systems. All four major GNSS constellations (GPS, , GLONASS and BeiDou) can be received simultaneously thanks to the multi-band RF front-end architecture. It also comes with an IST8310 compass, a tri-color LED indicator, a buzzer and a safety switch. There are 3 different connectors to choose from for different uses. The module has a baud rate of 115200 (previously 38400). It has an active circuit for the ceramic patch antenna, a rechargeable backup battery for hot start. The high-gain 25 x 25 mm2 patch antenna provides excellent performance, and the omnidirectional antenna radiation pattern increases the flexibility of device installation. GNSS Receiver:Ublox M9N Number of Concurrent GNSS:Up to 4 GNSS,BeiDou,,GLONASS,GPS,QZSS Frequency Band:GPS L1, E1,GLONASS L1,BeiDou B1,SBAS L1,QZSS L1 Compass:IST8310 Output Protocol:UBX(),NMEA Accuracy:1.5m Nav. Update Rate:Up to 25 Hz (4 concerrent GNSS) GNSS Augmentation System:EGNOS, GAGAN, MSAS and WAAS,QZSS: L1S Default Baud Rate:115200 Input Voltage:4.7-5.2V Port Type:JST--10P Antenna:25 x25 x4 mm ceramic patch antenna Power consumption:Less than 200mA @ 5V Operating Temperature:-40℃-80℃ Cable Length:26cm (42cm cable purchase separately) Other:Tri-color LED Onboard Buzzer Safety Switch LNA MAX2659ELT+ RF Amplifer Rechargeable capacitance Low noise 3.3V regulator Due to different batches, the printed words on the product will be different, which does not affect use. Type:A:Regular Edition Colour:Black Material:ABS Package Contents: 1 * GPS Module 1 * Carbon Fiber Stick 2 * Bases 1 Set * Mounting Screws 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.