FREE BUMPER + 1-YEAR DATA SIMThe RS4 Pro review, and what it means for the RS4
Emlid RS4
All-band RTK GNSS receiver with IMU tilt, LoRa and LTE. Works as a base or a rover.
Plus 1 year FREE: Emlid RTK corrections
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- Updated to the latest Emlid firmware before it ships
- Your free data SIM, installed and tested in the base on request
- 3D Mapping Tools desktop software included
- Phone support from people who use the gear: (901) 444-0804
The workhorse base and rover.
All-band RTK
L1, L2, L5 and L6 for faster fixes under trees and near buildings.
IMU tilt compensation
Shoot corners and walls without leveling the pole.
LoRa radio and LTE
Run your own base by radio, or drop in a SIM for network corrections.
IP68, two-day battery
Rated IP68, and up to two full working days on a single charge.
See the RS4 in the field
Run your RS4 with FieldGenius.
Add a total station to the same job, stake curves and surfaces, and keep a perpetual license instead of a subscription.
- GNSS and total station in one app
- Curves, arcs and field-to-finish linework
- Surface staking with cut and fill
- COGO, traverse, grid-to-ground
Specifications
Emlid's full spec sheet ↗- GNSS signals
- L1 / L2 / L5 / L6, all-band
- Tilt compensation
- IMU
- Radio
- LoRa, 450 / 915 MHz
- Cellular
- Global LTE, nano-SIM
- Connectivity
- Dual-band Wi-Fi, Bluetooth
- Protection
- IP68
- Battery
- Up to two full working days
RS4 or RS4 Pro?
Same GNSS engine, same radio, same tilt. The difference is the cameras. If your crew stakes out more than it collects, get the Pro.
Questions we get about the RS4 and RS4 Pro
What comes free when I buy from 3D Mapping Tools?
A rubber protection bumper and a 1-year, 24 GB data-only SIM, with every receiver. Ask at checkout and we will install and test the SIM in your base. Emlid also includes 1 year of RTK corrections.
Do I need a base, or can I use an RTK network?
For the best accuracy, we recommend your own base on site. A base also keeps working where there is no cell coverage, because it talks to the rover over the built-in LoRa radio.
Many users run a single rover on an RTK network instead: your state's network (it varies by state), Point One Navigation (we offer this), Emlid RTK corrections (1 year free with every receiver), and others. Corrections come over the internet, either from your phone or tablet's data or from a SIM card in the receiver. Every RS4 and RS4 Pro from us includes a free 1-year, 24 GB data SIM for exactly this.
Can the RS4 be my base and my rover?
Yes, it works as either. Many crews pair an RS4 base with an RS4 Pro rover.
Which field software works with it?
Emlid Flow and MicroSurvey FieldGenius. Emlid Flow Pro covers the survey features most users need. FieldGenius is a full survey app: COGO, curves, offsets, surface staking and total station support, plus much more. It is sold as an annual or a perpetual license.
Do you offer financing?
Yes, through Approve and BNC Finance. Apply online in a few minutes, or use the Finance button above to apply for this item.
Can you help me get it working?
Yes. Every Emlid receiver we ship is updated to the latest firmware and ready for the field. On request, we will install and test your SIM in the base before it ships.
Our YouTube channel has setup videos, with more coming that cover every feature of Emlid Flow Pro. And when you have a question, call us at (901) 444-0804.