丨 Product Introduction
1. Advanced technology: Based on UBX-M9140, precise positioning in extreme environments.
2. Four mode combination: compatible with four systems including Beidou, with fast initialization.
3.25Hz rate: Fast data output, suitable for dynamic environments.
4. Ceramic antenna: Built in 25 * 25 * 4mm ceramic antenna, lightweight, high gain, anti-interference.
丨 Specification parameters
|
Specification parameters
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|
Chip
characteristics
|
1
|
chip
|
UBX-M9140
|
|
2
|
Signal channel
|
92-channel
|
|
3
|
working frequency
|
GPS: L1 C/A,
QZSS: L1 C/A/S,
GLONASS: L10F，
BeiDou: B1I,
Galileo: E1B/C ，
SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN
|
|
4
|
Time pulse frequency
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0.25Hz-25Hz (default 1Hz)
|
|
5
|
Time pulse signal accuracy
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RMS：30ns
|
|
99% ：60ns
|
|
6
|
Horizontal
position accuracy
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1.5m CEP (with SBAS)
|
|
2.5m CEP (without SBAS)
|
|
7
|
Start Time
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Cold start: 24 seconds
|
|
Warm start: 2s
|
|
Hot start: 2s
|
|
8
|
sensitivity
|
Tracking: -167dBm
|
|
Re capture: -160dBm
|
|
Cold start: -148dBm
|
|
Hot start: -159dBm
|
|
9
|
Speed accuracy
|
0.05m/s
|
|
10
|
Baud rate
|
38400bps (default) [Optional: 4800-921600]
|
|
11
|
Output Protocol
|
NMEA-0183、RTCM 3.3、UBX
|
|
12
|
Output level
|
TTL
|
|
13
|
Extreme working state
|
Gravity acceleration limit: 4g
|
|
Height limit: 80,000m
|
|
Speed limit: 500m/s
|
|
Antenna
characteristics
|
1
|
Antenna specifications
|
25*25*4
|
|
2
|
Maximum gain of antenna
|
2.5dBi
|
|
|
3
|
Polarization mode
|
RHCP
|
|
4
|
Noise coefficient
|
≤0.8dB
|
|
5
|
LNA gain
|
L1：20±2dB
|
|
Working
characteristics
|
1
|
working voltage
|
3V-5.5V DC(Typical value: 5.0v)
|
|
2
|
power waste
|
<100mW @5V
|
|
3
|
size
|
50*38*17.5
|
|
4
|
weight
|
62.2g
|
|
5
|
Connector
|
USB-A
|
|
6
|
working temperature
|
-35℃-75℃
|
|
7
|
Storage temperature
|
-40℃-85℃
|
Table 1 Interface Definition
|
NO.
|
PIN name
|
describe
|
|
1
|
VCC
|
Power input, DC +5V
|
|
2
|
D-
|
Data negative signal line
|
|
3
|
D+
|
Data positive signal line
|
|
4
|
GND
|
grounding
|
Reliable Sub-Meter GNSS Positioning for Vehicles
The DALANG UBX-M9140 GPS board offers sub-meter positioning accuracy with support for Beidou and GPS constellations. Ideal for vehicle-mounted applications requiring timing and speed measurement, it’s a compact and stable RTK GPS solution for entry-level navigation systems or secondary autopilot sensors.
Real-Time Speed & Timing with OS Compatibility
This GNSS module features accurate speed detection and vehicle timing functions, seamlessly compatible with Windows 10 and Windows 11 systems. Whether you’re building vehicle tracking or smart mobility platforms, this GNSS RTK module provides real-time responsiveness on standard PCs or embedded systems.
Designed for Embedded & Automotive Integration
The UBX-M9140 integrates easily into car-mounted systems, fleet management devices, or transport monitoring units. Its compact footprint and low power design make it ideal for OEM applications seeking a low-cost, high-stability RTK module or GPS board for smart mobility deployments.
Stable Signal Reception in Dynamic Environments
With strong anti-interference performance and stable satellite acquisition, the module provides reliable GPS data even under urban canopy or vehicle motion. This makes it an efficient GNSS module for vehicle fleets, transit systems, or connected autopilot development.
Product Advantages
Sub-Meter Accuracy with GNSS Support
Built for consistent accuracy, the UBX-M9140 GNSS module delivers sub-meter performance for vehicle-based positioning tasks. It’s a reliable solution for teams needing a compact GPS module for navigation or timing functions.
Windows 10/11 Compatibility for Broad Use Cases
This GNSS module supports fast integration with Win10/11 operating systems, enabling real-time telemetry, tracking, and mapping on standard PC platforms—ideal for entry-level autopilot setups or commercial monitoring.
Integrated Antenna and Compact GPS Board Design
Designed for space-limited applications, the built-in antenna simplifies deployment. Whether you're integrating into a dash-mounted tracker or a portable mobility platform, this GPS module is purpose-built for field stability.
Reliable Speed and Timing Functions
Engineered for fleet timing and real-time velocity feedback, the module offers precise performance for moving vehicles—perfect for developing GPS platforms in logistics, urban mobility, or telematics.
Need reliable vehicle positioning with sub-meter accuracy? Order the DALANG UBX-M9140 now and power your smart mobility or fleet tracking solution with confidence.
About Us
DALANG is a dedicated manufacturer of high-performance GNSS modules and RTK positioning solutions, serving industries such as UAV navigation, precision agriculture, and geospatial mapping. With a clear focus on accuracy, reliability, and integration flexibility, we support both standard and custom applications across global markets. Our product lines are engineered to meet the evolving demands of real-time positioning with support for multiple GNSS constellations, including GPS, GLONASS, BDS, and Galileo.
Our production facility spans 2,500㎡ and includes advanced SMT lines, in-house R&D labs, and full functional testing for every unit shipped. With a team of 30+ GNSS engineers, we design and manufacture over 200,000 GNSS receivers and modules annually. Certified to ISO9001:2015, and compliant with CE and RoHS standards, we follow a strict quality assurance process from prototyping through mass production. We also provide firmware updates, system integration support, and full lifecycle product documentation.
Trusted by partners in over 30 countries, DALANG delivers fast, scalable manufacturing with personalized technical support. Our streamlined collaboration model—covering inquiry, consultation, prototyping, and delivery—ensures efficiency from first contact to deployment. Whether you're sourcing off-the-shelf GNSS hardware or launching a customized solution, DALANG is your dependable partner for accurate, cost-effective positioning systems.
FAQ
What makes your GNSS modules suitable for UAV and vehicle applications?
Our GNSS modules, featuring the UBX-M9140 chip, support multiple satellite constellations like Beidou GPS, GLONASS, and Galileo to provide accurate real-time positioning and timing. Compact and lightweight with USB plug-and-play, they are ideal for UAV navigation and vehicle-mounted timing and speed measurement.
Can I customize the firmware or interface of the GNSS receiver?
Yes, we offer firmware update support and customization options through our OEM/ODM services. This flexibility helps you tailor the GNSS receiver functions and interface for specific applications, ensuring seamless integration into your UAV or automotive navigation systems.
How easy is it to install and use the UBX-M9140 GNSS module on Windows platforms?
We designed the UBX-M9140 with a USB-A interface for simple plug-and-play use on Windows 10/11. This allows quick setup with no extra drivers needed, making it convenient for real-time GPS navigation data streaming and troubleshooting during development or operation.
What quality controls are in place to ensure product reliability?
We strictly follow ISO9001:2015 standards with multiple quality control stages, including SMT production, functional testing, and final inspection. Our certifications and rigorous testing processes guarantee the durability and stability of every GPS module we ship.
