Product descriptionGNSS single-frequency multi-system sub-meter positioning moduleGN-401L is a high-performance, multi-system single-frequency GNSS navigation and positioning module, which can simulta

  • Model:: GN-401L
  • Working level:: TTL Level
  • Refresh rate:: Default 1Hz,1Hz-15Hz
  • Operating voltage(V):: DC Voltage 3.6V-5.5V, Typical: 5.0V
  • Operating current:: Capture 50mA/5.0V
  • Connector type:: 1.0 6PIN
  • size(mm):: 30*30*8.6mm
  • Weight(g):: 10g
  • Brand:: TOPGNSS
  • Receiving channel: 72

Product description

GNSS single-frequency multi-system sub-meter positioning module

GN-401L is a high-performance, multi-system single-frequency GNSS navigation and positioning module, which can simultaneously support receiving GPS, GLONASS, GALILEO and QZSS satellite signals.

There are more stars, faster positioning, and higher accuracy. The wide-area differential GPS augmentation system is supported by default. [S129,S137.... Wide-area increase

Strong Satellite].

The module has a built-in LNA low-noise amplifier and filtering, a dual-feed point antenna, and a wider bandwidth, so that the signal reception distribution is more even when receiving GNSS satellite signals, so as to achieve more stable signal reception performance and achieve high-precision positioning effects. The module is small in size and light in weight, and can be used in industrial applications such as individuals, vehicles, unmanned aerial vehicles, handheld positioning terminals, and individual positioning systems.

The GN-401L module has the application characteristics of low power consumption, high sensitivity, high precision, and low cost. It is the best choice solution to meet the navigation, positioning, timing, aircraft model and other fields, and can meet the strict application requirements of industrial grade. The GNSS module has a compact size, and the surface adopts a 1.0 6PIN connector and a pad design, which can be more convenient for integration.

GN-401L features

Support GLONASS, GPS, GALILEO, QZSS, SBAS systems (can be set to support Beidou, GPS, BEIDOU, QZSS, SBAS systems) The number of simultaneous tracking satellites is up to 25. Cold start is less than 30s; hot start is less than 2s,

UART/TTL interface with PPS interface

Support refresh rate: 10-15Hz setting, single GPS supports 20HZ output

Built-in 4M fLASH supports setting saving, no data loss when power off.

Timing accuracy: 50ns

Small size: 30x30x8.2mm

LED status indicator, you can observe the module positioning status more intuitively.

Strong anti-interference, anti-multipath effect

Superior quality and reliability

Main application of sub-meter GPS module

Car navigation, personal positioning, drone positioning, synchronization timing, track recording, data acquisition, vehicle monitoring, authorization

Detecting balloons at high altitude.

TOPGNSS GNSS Module GN-401L Performance




L1, 1575.42MHz


NMEA 0183 v2.3,4.x GPS/QZSS L1 C/A,GLONASS L10F Bei Dou B1 SBAS L1 C/A:WASS,

EGNOS,MSAS , Support Galileo E1B/C. Default GPS+GLONASS mode
Default:GGA,GSA,GSV,RMC Support:VTG,GLL,TXT binary and NMEA Command

Available baud rate

(Default 9600) Can be set 1200,4800,19200,38400,57600,115200 bps

Receiving channel



Tracking sensitivity:-160Dbm Capture sensitivity:-157dBm

Cold start

29s average

Warm start time

28s average

Hot start time

1s average


HorizontalPosition:Autonomous<2.5maverage, SBAS < 2.0m average
Velocity: 0.1 m/s
Timepulse signal: RMS 30 ns

maximum height

18000  Meter

Maximum speed

515 m/s

Maximum acceleration


update frequency



AssistNow on-line and off-line

Working output level

output level

Output TTL level

Physical characteristics


6 pin 1.0 pitch  GND,VCC3.3-5V.TX.RX.PPS.EN


30mm * 30 mm * 8.8mm

Operating Voltage

3.3V-5.0VDC ±5%



Connector form

1.0 6 PIN

Cable length:

15 CM

Operating temperature

-40 to 85

Storage temperature

-40 to 85