丨 Product Introduction
1. Industrial dual frequency: Industrial grade dual frequency positioning module.
2. Anti interference and stability: Designed to withstand interference and operate stably in complex electromagnetic environments.
3. Multiple modes: Supports multi-mode positioning.
4. Equipped with compass: Equipped with QMC5883L electronic compass.
丨 Specification parameters
|
Specification parameters
|
|
Chip
characteristics
|
1
|
chip
|
UM620
|
|
2
|
Signal channel
|
96 channels
|
|
3
|
working frequency
|
BDS B1I, B1C*, B2a
GPS L1C/A, L5
GLONASS G1
Galileo E1, E5a
QZSS L1, L5
SBAS L1C/A
|
|
4
|
Positioning mode
|
Single system independent positioning
Multi system joint positioning
|
|
5
|
Horizontal positioning
accuracy
|
1.5m CEP (dual band four system, open sky)
|
|
6
|
Start time
|
Cold start<26 seconds
Hot start<2 seconds
Re capture<2 seconds
|
|
7
|
sensitivity
|
Tracking -162 dBm
Cold start -148 dBm
Hot start -158 dBm
Re capture -160 dBm
|
|
8
|
Speed accuracy
|
0.05m/s
|
|
9
|
Data update rate
|
1Hz-10Hz (default 1Hz)
|
|
10
|
1PPS accuracy (RMS)
|
20ns
|
|
Antenna
characteristics
|
1
|
Antenna specifications
|
25*25*2/18*18*2
|
|
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
|
3.0V-5.5V DC (typical value: 5.0V)
|
|
2
|
power waste
|
<100mW @5V
|
|
3
|
size
|
25*25*8mm
|
|
4
|
weight
|
11.6g
|
|
5
|
Connector
|
SH1.0 6pin
|
|
6
|
working temperature
|
-40℃-85℃
|
|
7
|
Storage temperature
|
-40℃-85℃
|
|
Compass
|
1
|
compass
|
QMC5883L
|
丨 product mix
Table 1 Interface Definition
|
PIN name
|
Description
|
|
GND
|
Grounding
|
|
VCC
|
The main power supply of the system has a supply voltage of 3.3V-5V and acurrent of approximately 45mA during operation
|
|
RXD
|
TTL interface data input
|
|
TXD
|
TTL interface data output
|
|
SCL
|
Serial clock - I2C master/slave clock
|
|
SDA
|
Serial Data - I2C Master/Slave Data
|
Precision Navigation for FPV and Fixed-Wing Aircraft
The DALANG UM620 GPS module is designed for fixed-wing drones, crossover UAVs, and FPV platforms requiring stable, high-speed navigation. With dual-frequency support and Beidou-GPS integration, it offers excellent signal acquisition and is perfect for users who need professional-grade drone GPS performance.
Dual-Frequency RTK Support for Accurate Positioning
Capable of centimeter-level accuracy, this module is suitable for advanced positioning tasks in FPV drones and autonomous aircraft. If you're looking to buy GPS module components with reliable RTK functionality, the UM620 is built for you. It’s also an ideal RTK GPS for sale choice in the developer UAV market.
Out-of-Control Rescue Mode for Safer Flights
The UM620 includes an automatic return-to-home feature that activates when the drone loses signal. For developers and pilots seeking safety without compromise, this drone GPS module delivers intelligent recovery backed by robust GNSS data. When you buy GPS receiver units, built-in fail-safes like this matter.
Optimized for Open-Source Flight Controllers
Seamlessly compatible with F4 and F7 flight stacks and open-source firmware like ArduPilot, this GPS module supports UART, I2C, and CAN interfaces. It's easy to integrate for those looking to buy GPS receiver systems that plug into common drone frameworks with minimal setup.
Product Advantages
Dual-Frequency RTK GPS Module with Beidou Support
This GPS module offers simultaneous Beidou and GPS reception with RTK-level positioning. It’s perfect for pilots who need to buy GPS module technology that supports centimeter-level accuracy.
Auto-Return Safety for FPV and UAV Systems
The built-in return-to-home feature helps prevent flyaways and crashes, making this a safe choice for those in search of a reliable drone GPS solution or looking to buy GPS receiver modules for unmanned systems.
RTK GPS for Sale with Open-Source Compatibility
Whether you're working with F4, F7, or open-source autopilots, this unit is a plug-and-play option. As an RTK GPS for sale, it delivers maximum flexibility across UAV projects.
Ideal GPS Module for Lightweight Aircraft
Designed for airborne systems, this compact GPS module balances size, power, and performance. It’s a practical fit for anyone needing to buy GPS module products for small UAVs.
Need reliable RTK positioning and rescue safety in flight? Order the DALANG UM620 GPS module today and upgrade your UAV with proven precision and control.
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
1. Who are we?
We are DALANG, a specialized manufacturer of GNSS modules and RTK positioning systems based in China, with a focus on high-precision solutions for UAVs, surveying, and smart agriculture.
2. How can we guarantee quality?
All products undergo strict multi-stage quality control, including SMT production, functional testing, and 100% final inspection. We are ISO9001:2015 certified and follow international compliance standards such as CE and RoHS.
3. What can you buy from us?
You can purchase GNSS receivers, RTK modules, base stations, antennas, flight control positioning systems, and other GNSS-related components and accessories.
4. Why should you buy from us not from other suppliers?
We combine strong in-house R&D, flexible OEM/ODM support, industrial-grade quality assurance, and fast global delivery. Our expertise in GNSS RTK ensures stable, accurate, and scalable solutions tailored to your specific use case.
5. What services can we provide?
We offer OEM/ODM customization, technical consulting, firmware support, prototyping, and global after-sales service. Our team works closely with international clients to ensure efficient communication and long-term support.
