M20L
Palm-size GNSS RTK receiver with a green laser, calibration-free IMU and 4G.
Model comparison
M20L — M25 comparison
Specifications side by side. Differences: 19, highlighted in colour.
M25
High-precision GNSS RTK receiver with a 120 m laser, AR camera and calibration-free IMU.
differs
| Specifications | M20L | M25 |
|---|---|---|
| GNSS signals | ||
| Number of channels | 1408 | 1408 |
| GPS | L1C/A, L1C, L2P(Y), L2C, L5 | L1C/A, L1C, L2P(Y), L2C, L5 |
| GLONASS | L1, L2, L3* | L1, L2, L3* |
| BeiDou (BDS) | B1I, B2I, B3I, B1C, B2a, B2b* | B1I, B2I, B3I, B1C, B2a, B2b* |
| Galileo | E1, E5a, E5b, E6* | E1, E5a, E5b, E6* |
| QZSS | L1C/A, L1C, L2C, L5, L6* | L1C/A, L1C, L2C, L5, L6* |
| SBAS | L1, L5* | L1, L5* |
| NavIC (IRNSS) | L5 | L5 |
| L-band corrections | B2b PPP (Only for the Asian-Pacific Region) & HAS* | B2b PPP (Only for the Asian-Pacific Region) & HAS* |
| Correction data formats | CMR, CMR+, RTCM2.X, RTCM3.X | CMR, CMR+, RTCM2.X, RTCM3.X |
| Data output formats | NMEA-0183, RINEX, DAT | NMEA-0183, RINEX, TXT |
| Data update rate | Up to 20Hz | Up to 20Hz |
| Signal re-acquisition time | <1s | <1s |
| Cold start time | <40s | <40s |
| Positioning accuracy | ||
| Standalone positioning (RMS), horizontal | 1.5m | 1.5m |
| Standalone positioning (RMS), vertical | 3.0m | 3.0m |
| DGPS / code differential (RMS), horizontal | 0.4m | 0.4m |
| DGPS / code differential (RMS), vertical | 0.8m | 0.8m |
| RTK accuracy (RMS), horizontal | ±(8mm+1×10-6·D) | ±(8mm+1×10-6·D) |
| RTK accuracy (RMS), vertical | ±(15mm+1×10-6·D) | ±(15mm+1×10-6·D) |
| Static accuracy (RMS), horizontal | ± (2.5mm+0.5-6·D) | ± (2.5mm+0.5-6·D) |
| Static accuracy (RMS), vertical | ± (5mm+0.5-6·D) | ± (5mm+0.5-6·D) |
| Velocity accuracy (RMS) | 0.03m/s | 0.03m/s |
| Velocity accuracy | ≥0.03m/s | ≥0.03m/s |
| Time accuracy (RMS) | 20ns | 20ns |
| Tilt compensation and IMU | ||
| Tilt compensation accuracy | ≤2cm(Tilt Angle≤60°, Up to 120°) | ≤2cm(Tilt Angle≤60°, Up to 120°) |
| IMU update rate | 200Hz | 200Hz |
| IMU (inertial unit) | 120° calibration-free | 120° calibration-free |
| Laser | ||
| Laser range | — | 120+ m |
| Laser measurement distance (spec table) | — | Supports 120-meter laser range with high-brightness laser technology |
| Laser accuracy (RMS), horizontal | ±(8mm+3mm/m) | ±(8mm+3mm/m) |
| Laser accuracy (RMS), vertical | ±(15mm+3mm/m) | ±(15mm+3mm/m) |
| Laser type | Green laser | — |
| Cameras | ||
| AR camera (live stakeout) | — | 5 MegaPixel, large viewing angle, supports live view stakeout |
| Laser-assisted camera | — | 5 MegaPixel, supports laser aiming display |
| Communication | ||
| Bluetooth | SPP3.0+BLE5.0 Dual Mode, 2.4 GHz @ +6 dBm | V5.2 Dual Mode. 2.4GHz@+5dBm |
| Wi-Fi | 802.11 a/b/g/n, 5.0GHz | IEEE 802.11b/g/n |
| LTE FDD bands | B1/3/5/7/8/20/28 | B1/3/5/7/8/20 |
| LTE TDD bands | B34/38/39/40/41 | B38/40/41 |
| WCDMA / UMTS bands | B1/5/8 | B1/8 |
| GSM / GPRS / EDGE bands | B850/900/1800 | 900/1800 MHz |
| Internal radio modem | ||
| Radio transmitting power | 2W(33±1dBm) 1W(30±1dBm) | 1W (27 dBm ±1.5 dB) or 2 W (32 dBm ±1.5 dB) |
| Radio frequency range | 410~470MHz | 410~470MHz |
| Radio protocols | SOUTH, TRIMTALK 450S, TRIMMK III, TRANSEOT, SATEL, MERIDIANLINK | SOUTH, TRIMTALK 450S, TRIMMK III, TRANSEOT, SATEL, MERIDIANLINK |
| Air baud rate | 9600, 19200, 11000 | 9600, 19200, 11000 |
| Radio working distance | 15km (internal radio; from garbled brochure 2025.10.13) | Up to 15 km |
| System and memory | ||
| Internal storage | 32GB | 32GB |
| Power supply | ||
| Battery (voltage / capacity) | 7.2V, 7000mAh lithium-ion Rechargeable Battery | 7.2V, 6600mAh lithium-ion Rechargeable Battery |
| Operating time, RTK rover | Up to 20 hours (Typical Power Consumption) | Up to 22 hours (Typical Power Consumption) |
| Operating time, static | Up to 40 hours (Typical Power Consumption) | Up to 35 hours (Typical Power Consumption) |
| Charging | Support USB PD 15V/2A (Supports Quick Charging Adapter) | Support USB PD 15V/2A (Supports Quick Charging Adapter) |
| Operating conditions and protection | ||
| Operating temperature | -40°C~+85°C | -40°C~+85°C |
| Storage temperature | -55°C~+85°C | -55°C~+85°C |
| Shock resistance | 2m Pole Drop Onto Concrete | 2m Pole Drop Onto Concrete |
| Ingress protection (IP) | IP68 | IP68 |
| Physical characteristics | ||
| I/O interfaces and ports | 1× USB type-C port; 1 × TNC antenna port; 1× SIM card slot; 1 × 5 pin LEMO port | 1× USB type-C port; 1 × TNC antenna port; 1× SIM card slot; 1 × 5 pin LEMO port |
| Dimensions | 125mm×125mm×79mm | 133mm*133mm*84.5mm |
| Weight | ≤699g | ≤900g |
M20L — M25
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