The Emlid Reach RS4 All-Band RTK GNSS Receiver is a high-precision surveying tool designed for professionals working in construction, mapping, utilities, and geospatial data collection. It supports all major satellite constellations and frequencies, including L1, L2, L5, and L6 bands, enabling reliable performance even in challenging environments such as urban canyons and dense tree cover. With 672 tracking channels and advanced tilt compensation, the RS4 delivers centimeter-level accuracy without requiring the pole to be perfectly vertical. Its magnesium alloy body offers durability while remaining lightweight, and the IP68 rating ensures protection against dust and water.

This receiver is ideal for field crews conducting stakeouts, line surveys, and layout tasks. It operates for up to 16 hours on a single charge and supports RTK corrections via NTRIP, LoRa, or UHF radio. The RS4 integrates with Emlid Flow and Flow 360 software, allowing seamless data collection, project management, and cloud synchronization between field and office teams. Whether working in extreme temperatures or rugged terrain, the RS4 is built to maintain accuracy and efficiency throughout the job.

Coordinate your team Invite team members, share projects and manage access Monitor field progress from the office and exchange data instantly with real-time sync One workflow for the whole team, with data that is always up to date, a consistent interface, and no additional training required

Execute projects on site Topographic surveys – gather terrain and elevation data accurately Stakeout & layouts – place points, lines, and markers directly in the field Line & road surveys – stake centerlines and offsets with precision Cut & Fill calculations – measure earthworks and stockpiles on site As-built verification – check constructed structures against your plans

Key Features:

• All-band RTK GNSS receiver with tilt compensation
• Tracks GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC
• 672 channels for multi-frequency satellite tracking
• Centimeter-level RTK accuracy: H: 7 mm + 1 ppm, V: 14 mm + 1 ppm
• Tilt compensation: RTK + 2 mm + 0.3 mm/°
• Magnesium alloy body with IP68 rating
• Battery life: up to 16 hours; USB Type-C charging
• Operating temperature: -40°C to +65°C
• Connectivity: LoRa, UHF, LTE, Wi-Fi, Bluetooth 5.1
• Compatible with Emlid Flow and Flow 360 for mobile and cloud-based workflows