Emlid Reach M2



For precise UAV mapping with less GCPs.

The Reach M2 is a compact and easy-to-use RTK GNSS module that connects to a camera and records the location of each photo. With an update rate of up to 20 Hz, the Reach M2 produces highly detailed and accurate georeferenced data sets.


BeiDou B1I, B2I
Galileo E1-B/C, E5b

Positioning Accuracy

Static horizontal 4mm + 0.5 ppm
Static vertical 8mm + 1 ppm

Kinematic horizontal 7mm + 1 ppm
Kinematic vertical 14mm + 1 ppm


LoRa radio (sold separately) 868/915MHz (up to 8km)
Wi-Fi 802.11b/g/n
Bluetooth 4.0/2.1 EDR
Ports: USB, UART, Event


NTRIP and RTCM3 corrections
NMEA and LLH/XYZ position output
RINEX logs with update rate up to 20Hz
16GB internal storage

Package Contents

– Emlid Reach M2
– Micro-USB cable
– JST-GH 6-pin to jumper pin cable
– JST-GH 5-pin to jumper pin cable
– Emlid Flow app (free download)


Emlid Flow 1-Year Survey Plan Subscription

The Emlid Flow Survey Plan Subscription unlocks advanced survey functions on both the Emlid Flow app and the Emlid Flow 360 cloud-based interface.

See added benefits below:

Emlid Flow

- Collect and stakeout lines
- Add survey codes on the go
- Use WMS/WMTS layers
- Satellite map
- Localization

Emlid Flow 360

- Upload code libraries
- Satellite map
- Use WMS/WMTS layers

Up to three Emlid Flow 1-Year Survey Plan Subscription licenses can be active simultaneously on your Emlid Flow account, ensuring you have long term access to the benefits of the Survey Plan.

Emlid Multi-Band GNSS Antenna

Multi-band helical GNSS antenna.

Tracks L1/L2 bands on GPS, GLONASS, BeiDou and E1/E5 on Galileo.

Emlid Reach M2/M+ SMA Antenna Adapter Cable 0.5m

Compatible with:
- Emlid Reach M2
- Emlid Reach M+

Emlid Reach M2/M+ Camera Hot Shoe Adapter

Hot shoe adapter for the Emlid Reach M2/M+ modules. Wires the flash sync pulse from camera to the Reach M2/M+ modules, for precise time stamping of each picture. Necessary for the PPK workflow.

Designed to work with any camera with hot shoe connector. Tested with Sony, Canon and Nikon.

Not compatible with the original, Edison-based, Reach module.

Emlid Reach M2/M+ LoRa Radio

The Emlid LoRa Radio allows the Emlid Reach M2/M+ modules to receive corrections from a local RTK base station.


Antenna connector: RP-SMA
Weight: 17g, 32g with the antenna
Size: 50 x 29 x 19.6mm


Frequency: 862-1020MHz
Output power: 100mW
Transmission range: up to 8km

Package Contents

– Emlid LoRa Radio module
– Emlid LoRa antenna
– Cable for connection to the Emlid Reach M2/M+

Сompatible with Emlid Flow app.

Not compatible with the original, Edison-based, Reach. Emlid Reach M2/M+ modules are not included.

Emlid Reach M2/M+ JST-GH 6p-6p Cable for Pixhawk 2

Not compatible with the original, Edison-based, Reach module.

Emlid Reach M2/M+ JST-GH to DF13 6p-6p Cable for Pixhawk 1

Not compatible with the original, Edison-based, Reach module.


Why camera synchronization is so important

Imagine you are flying your drone at 20m/s with a GPS that works at 5Hz. This means a typical autopilot trigger for your camera will only record position readings every 4m. In addition, there is always a delay between the trigger and the moment the photo is taken, which prevents you from capturing the accurate georeferencing you need.  

Reach eliminates the delay

To provide accurate georeferencing, the Reach M2 connects directly to the camera hot shoe port, which is synced with the shutter. This method allows GCPs to be used only to check the accuracy of your survey, whilst logging the time and coordinates of each photo at a resolution of less than a microsecond.

PPK workflow

1. Connect Reach to a hot shoe port on a camera

When a photo is taken, the camera produces a pulse on a flash hot-shoe connector which is synced to a shutter opening.

2. Fly a drone, Reach will record photo events

Reach captures flash sync pulses with sub-microsecond resolution and stores them in a raw data RINEX log in the internal memory.

3. Download logs from Reach and base station

After the flight, you can download the RINEX logs from your airborne Reach module and a base station (Reach RS, CORS or another receiver).

4. Process logs and get a file with geotags of photos

Using the free Emlid Studio software process RINEX files to produce a file that contains precise coordinates of the photos, which can be used for georeferencing.

NTRIP or another Reach as a base station

Reach needs corrections from a base station in PPK and RTK, to determine centimetre-precise coordinates. It could be either another Reach receiver or an NTRIP service. VRS is also supported.


Up to 60km


Up to 100km

Time to fix

5 seconds

RINEX logging update rate

Up to 20Hz (coming with a software update, up to 10 Hz now)

Comes with the Emlid Flow app

Emlid Flow is the most user-friendly data collection software that is available for Android and iOS, supports thousands of coordinate systems and has been translated into many languages. With Emlid Flow, you can control all the features of Reach receivers, such as setting up a base station, logging RINEX data, and configuring NMEA output.

Camera control

As well as trigger cameras, the Emlid Reach M2 can register events. The event mark feature is a must for aerial mapping as it records the precise time the shutter was activated..

Simple log management

Logs are automatically recorded directly to RINEX in the internal memory. Users can view a list of the logs and download them using the Emlid Flow app.

Monitoring data

Emlid Flow shows current satellite levels, your location on a map, and much more.


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