Overview
The Beitian 126/190 series GNSS module is a compact SMD GNSS module family designed to output positioning data through a serial port (TTL level). Available variants include BE-126/BE-190, BF-126/BF-190, and BH-126/BH-190, with different GNSS system support, package size, and interface/protocol options depending on the selected model.
Key Features
- Multi-constellation options by model (GPS / BDS / GALILEO, with SBAS and QZSS on supported models; GLONASS G1 on supported models).
- Compact, lightweight SMD packages (16 x 12.2 mm class and 10.1 x 9.7 mm class variants depending on model).
- Serial output at TTL level (protocol and message support varies by model).
- FLASH supported (listed as “With FLASH” for the models shown).
For integration support and order selection help, contact support@rcdrone.top or visit https://rcdrone.top/.
Specifications
Model comparison (select the option that matches the required GNSS systems and protocol)
| Parameter | BE-126 | BE-190 | BF-126 | BF-190 | BH-126 | BH-190 |
|---|---|---|---|---|---|---|
| Chip | M10050 | M10050 | — | — | — | — |
| Working mode | GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN | GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN | GPS L1, Beidou B1, Galileo E1, QZSS L1 | GPS L1, Beidou B1, Galileo E1, QZSS L1 | GPS L1, Beidou B1, Galileo E1, QZSS L1, GLONASS G1 | GPS L1, Beidou B1, Galileo E1, QZSS L1, GLONASS G1 |
| Channel | N/A | N/A | 100 | 100 | 120 | 120 |
| Sensitivity (trace) | -166 dBm | -166 dBm | -167 dBm | -167 dBm | -167 dBm | -167 dBm |
| Sensitivity (recapture) | -160 dBm | -160 dBm | -160 dBm | -160 dBm | — | — |
| Sensitivity (cold boot) | -148 dBm | -148 dBm | -148 dBm | -148 dBm | -148 dBm | -148 dBm |
| Sensitivity (warm boot) | -160 dBm | -160 dBm | — | — | — | — |
| Horizontal accuracy | 2.0 m CEP | 2.0 m CEP | CEP < 1.0 m | CEP < 1.0 m | CEP < 1.0 m | CEP < 1.0 m |
| Velocity accuracy | 0.05 m/s | 0.05 m/s | 0.05 m/s | 0.05 m/s | 0.05 m/s | 0.05 m/s |
| Dynamic heading | 0.3 deg | 0.3 deg | — | — | — | — |
| PPS time accuracy | RMS 30 ns; 99% 60 ns | RMS 30 ns; 99% 60 ns | 20 ns | 20 ns | 20 ns | 20 ns |
| Acquisition (cold boot) | 27 s | 27 s | 28 s | 28 s | 28 s | 28 s |
| Acquisition (warm boot) | 1 s | 1 s | — | — | 28 s | 28 s |
| Acquisition (recapture) | 1 s | 1 s | 1 s | 1 s | 1 s | 1 s |
| Baud rate | 4800 bps - 921600 bps; default 115200 bps | 4800 bps - 921600 bps; default 115200 bps | default 115200 bps | default 115200 bps | default 115200 bps | default 115200 bps |
| Output level | TTL Level | TTL Level | TTL Level | TTL Level | TTL Level | TTL Level |
| Output protocol | NMEA, UBX | NMEA, UBX | NMEA-0183 | NMEA-0183 | NMEA-0183 | NMEA-0183 |
| Update frequency | 0.25 Hz - 18 Hz; default 1 Hz | 0.25 Hz - 18 Hz; default 1 Hz | default 1 Hz | default 1 Hz | default 1 Hz | default 1 Hz |
| FLASH | With FLASH | With FLASH | With FLASH | With FLASH | With FLASH | With FLASH |
| Operational limits | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g |
| Voltage | DC 2.7 V - 3.6 V, typical: 3.3 V | DC 2.7 V - 3.6 V, typical: 3.3 V | DC 2.8 V - 3.6 V, typical: 3.3 V | DC 2.8 V - 3.6 V, typical: 3.3 V | DC 2.8 V - 3.6 V, typical: 3.3 V | DC 2.8 V - 3.6 V, typical: 3.3 V |
| Current | 30 mA / 3.3 V | 30 mA / 3.3 V | 14 mA / 3.3 V | 14 mA / 3.3 V | 14 mA / 3.3 V | 14 mA / 3.3 V |
| Size | 16 x 12.2 x 2.4 mm | 10.1 x 9.7 x 2.3 mm | 16 x 12.2 x 2.2 mm | 10.1 x 9.7 x 2.3 mm | 16 x 12.2 x 2.2 mm | 10.1 x 9.7 x 2.3 mm |
| Weight | 1.0 g | 0.9 g | 1.0 g | 0.9 g | 1.0 g | 0.9 g |
| Connector / Package | 24-pin SMD package | 18-pin SMD package | 24-pin SMD package | 18-pin SMD package | 24-pin SMD package | 18-pin SMD package |
| Operating temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Storage temperature | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C |
BE-126 / BE-190 detailed parameters (M10050)
| Receiver type | GPS L1 C/A, QZSS L1 C/A/S, BDS B1I/B1C, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN |
| Default position system | GPS, BDS, GALILEO |
| Augmentation system | SBAS, QZSS |
| Channel | N/A |
| Sensitivity (Tracking & Navigation) | -166 dBm |
| Sensitivity (Reacquisition) | -160 dBm |
| Sensitivity (Cold start) | -148 dBm |
| Sensitivity (Hot Start) | -160 dBm |
| Horizontal position | 2.0 m CEP |
| Velocity | 0.05 m/s |
| Dynamic heading | 0.3 deg |
| Time pulse | RMS 30 ns; 99% 60 ns |
| Acquisition (Cold start) | 27 s |
| Acquisition (Hot start) | 1 s |
| Acquisition (Aided start) | 1 s |
| Baud rate | 4800 bps - 921600 bps, default 115200 bps |
| Level | TTL level |
| Protocol | NMEA, UBX |
| NMEA messages | RMC, VTG, GGA, GSA, GSV, GLL |
| Update rate | 0.25 Hz - 18 Hz, default 1 Hz |
| FLASH | With FLASH, the configuration can be changed, and the power will not be lost |
| Frequency of time pulse signal | Configurable from 0.25 Hz to 10 MHz, the default period is 1 s, and the high level lasts for 100 ms |
| Operational limits | Altitude 80,000 m; Velocity 500 m/s; Dynamics < 4 g |
| Power | DC 2.7 V - 3.6 V, typical: 3.3 V; Current 30 mA / 3.3 V |
| Physical (BE-190) | Dimension 10.1 x 9.7 x 2.3 mm; Weight 0.9 g; Connector 18-pin SMD package |
| Temperature | Operating -40 C to +85 C; Storage -40 C to +105 C |
Pin definition (18-pin package shown)
| PIN | Name | I/O | Description |
|---|---|---|---|
| 1 | GND | G | Grounding |
| 2 | TXD | O | Main serial port data output |
| 3 | RXD | I | Main serial port data input |
| 4 | 1PPS | O | Seconds pulse output |
| 5 | EXTINT | I | External interruption |
| 6 | V_BCKP | I | Standby power |
| 7 | V_IO | I | IO voltage supply, which must be connected to VCC |
| 8 | VCC | I | VCC power supply pin, the supply voltage is 2.7-3.6 V, standard input: 3.3 V DC |
| 9 | RESET_N | I | System reset (active low). It must be as low as at least 1 ms to trigger the reset. |
| 10 | GND | - | Grounding |
| 11 | RF_IN | I | GNSS signal input |
| 12 | GND | - | Grounding |
| 13 | LNA_EN | O | Turn on/off external LNA or active antennas |
| 14 | VCC_RF | O | Output voltage RF part |
| 15 | NC | - | NC |
| 16 | SDA | I/O | I2C data |
| 17 | SCL | I | I2C clock |
| 18 | NC | - | NC |
Mechanical dimensions (drawing shown)
- Overall: 10.10 ± 0.1 mm x 9.70 ± 0.1 mm
- Body reference dimensions shown: 9.20 mm and 9.00 mm
- Thickness: 2.30 ± 0.2 mm
Applications
- Drones and robotics GNSS positioning (model-dependent constellation support)
- Intelligent driving / vehicle positioning integration
- Agricultural machinery positioning
- Urban transport and port/terminal positioning systems
Details

Model differences and core specs are listed together so buyers can match the right GNSS option to their project.

The Beitian module family is built for compact positioning use in drones, robotics, and other embedded systems.

Multi-constellation support helps the module stay reliable when you need stronger satellite coverage and better fixes.

Serial data output over TTL makes the module straightforward to connect to flight controllers and microcontrollers.

Select the option that matches your required constellation set and protocol support before integration.

NMEA output includes the common fields used by navigation software for position, speed, and satellite status.

The low-profile package keeps the footprint small enough for tight drone and robotics builds.

Flexible baud and update settings make it easier to tune the module for different controllers and link speeds.

Typical wiring examples show how the module fits into controller-based navigation and vehicle projects.

The parameter chart summarizes output level, power range, dimensions, and operating limits in one place.

Pin definitions and dimensional drawings help with footprint checks and PCB integration.
