Alpha Surveying

Alpha 4i GNSS Rover Set – Ultra-Compact RTK with 90° Tilt Sensor

Name: Alpha 4i GNSS Rover Set – Ultra-Compact RTK with 90° Tilt Sensor
Brand: Alpha Surveying
SKU: MET-GPSR-03
Price: 2900.00 USD
Availability: InStock

$2,900.00

The Alpha 4i GNSS Rover Set delivers fast, high-precision positioning with multi-constellation support, rugged IP67 durability, and real-time connectivity for professional land surveyors.

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Product Information

The Alpha 4i GNSS Rover Set is engineered for precision, portability, and efficiency, making it an ideal solution for mobile surveyors and geospatial professionals. Equipped with a 1408-channel GNSS receiver, it provides multi-constellation tracking, ensuring high-precision RTK positioning in diverse environments.

The IMU tilt sensor enables tilted measurements up to 90°, eliminating the need for leveling the pole and allowing for faster and more flexible data collection. The nano-material shell and aluminum alloy construction provide rugged durability, while the IP67 rating ensures dustproof and waterproof protection.

The integrated UHF radio supports both Rx and Tx modes and provides a 3km communication range, while the external radio compatibility extends the range up to 15km. Powered by an 18-hour battery, the Alpha 4i ensures continuous field operation.

The DiMap surveying software enhances usability with real-time mapping, stakeout, and data collection, and the Android-based compatibility ensures seamless integration with mobile devices.

Specs

Channels: 1408-channel GNSS module supporting all GNSS satellites and frequencies

IMU Technology: Tilt measurement up to 90°

Positioning Accuracy:

RTK: 8 mm + 1 ppm (horizontal), 15 mm + 1 ppm (vertical)
Static: 2.5 mm + 0.5 ppm (horizontal), 5 mm + 0.5 ppm (vertical)
IMU Tilt Compensation: ± (8 + 0.3 x Tilt) mm

Data Output: NMEA format via 5-pin serial port

Signal Tracking: GPS, GLONASS, BeiDou, Galileo, QZSS, SBAS, NAVIC

Connectivity:

Dual-mode Bluetooth 5.2
USB Type-C port for charging and data transfer
Internal UHF Radio (1W Rx/Tx, 3km range)
External radio support (up to 15km range)

Battery: 18-hour battery life (Ntrip), 15 hours (Radio Receiving), 8 hours (Radio Transmitting)

Dimensions: 98mm x 53mm

Weight: 380g

Durability:

IP67-rated dustproof and waterproof
1.6m drop resistance

Software Compatibility:

DiMap Android-based surveying software
Compatible with Android devices

Features

Multi-Constellation GNSS Tracking: Supports GPS, GLONASS, Galileo, and BeiDou for maximum positioning accuracy.
Rugged and Lightweight Design: IP67-rated for dustproof and waterproof performance.
Fast RTK Initialization: Achieve centimeter-level accuracy within seconds.
Long Battery Life: Up to 12 hours of continuous field operation.
Built-In Wi-Fi, Bluetooth, and 4G LTE: Seamless real-time communication and data transfer.
Web-Based Configuration: Manage settings easily from any device with a browser.
NFC Instant Connection: Fast pairing with compatible controllers.
Internal 8GB Memory: Store data securely without additional devices.

In the Box

Alpha 4i GNSS Receiver
Rechargeable Li-ion Battery
Dual Port Smart Charger
GNSS Survey Antenna
Antenna Cable
Data Transfer Cable (USB)
Rugged Carrying Case
Quick Start Guide
Calibration Certificate
Tools and Accessories Kit

FAQ

Q: What is included in the Alpha 4i GNSS Rover Set?

A: The set includes the Alpha 4i GNSS receiver, along with a GNSS pole, controller holder, battery, antenna, and necessary accessories for mobile RTK surveying.

Q: How accurate is the Alpha 4i Rover Set in RTK mode?

A: The RTK positioning accuracy is 8 mm + 1 ppm (horizontal) and 15 mm + 1 ppm (vertical), ensuring centimeter-level precision.

Q: What is the benefit of the IMU tilt sensor?

A: The IMU tilt sensor supports measurements up to 90°, allowing for fast and flexible data collection on uneven terrain without leveling the pole.

Q: What is the battery life of the Alpha 4i?

A: The 18-hour battery life ensures long-term operation, making it suitable for extended fieldwork.

Q: Is the Alpha 4i suitable for harsh environments?

A: Yes, it is IP67-rated for dust and water resistance and is drop-resistant up to 1.6 meters, ensuring durability in challenging conditions.

Q: What software is included with the Alpha 4i?

A: It includes DiMap surveying software, compatible with Android devices for real-time mapping, stakeout, and data collection.

Q: Does the set support Bluetooth connectivity?

A: Yes, it features dual-mode Bluetooth 5.2 for fast data transfer and wide compatibility with mobile devices.

Shipping:

Origin: We fulfill orders from our global logistics network / production centers.
Typical delivery times:
- US & EU: 7–12 business days
- Global: 10–15 business days
Tracking: Every shipment includes end-to-end tracking.
Duties & taxes: Calculated at checkout where available, or payable upon import per local rules.
Dispatch time: Usually 1–3 business days after order confirmation (we’ll notify you if an item needs extra prep).
Partial shipments: If a multi-item order is ready in stages, we may ship available items first.

Returns:

Return window: 14 days from delivery for unused items in original packaging (exceptions: consumables and custom builds).
Return address: We’ll provide a regional return address when you open an RMA (US or EU where applicable).
Refunds: Processed within 5–7 business days after inspection.
Exchanges: Fast replacement dispatch once the RMA is approved.

Warranty & Service:

Coverage: All instruments include manufacturer warranty.
Support: Remote onboarding (setup call + quick-start materials) and priority email support.
Repairs & calibration: We coordinate with authorized service partners as needed.

Support

Manufacturer warranty: All instruments include official warranty per brand policy.
Remote onboarding: We help you get started—video call + setup checklist + quick-start PDF.
Technical support: Priority email response; diagnostic help for connectivity, firmware, and workflows.
Repairs & calibration: We route service through authorized partners; we’ll coordinate logistics and keep you updated.

FAQ

Q: Where are you located?
A: Metricop is a specialized online store registered in the US & EU. We ship globally with tracking.

Q: Where do you ship from?
A: From our global logistics network / production centers. Typical delivery for US/EU is 7–12 business days (global 10–15).

Q: Do you offer warranty?
A: Yes - manufacturer warranty on all instruments. We also provide remote onboarding and coordinate service with authorized partners.

Q: How do returns work?
A: Start an RMA within 14 days of delivery. We’ll provide a regional return address (US/EU where applicable).

Q: Can I get a formal quote?
A: Yes - use Request for Quote. We typically reply within 2 business hours.

Q: Payment methods?
A: Major cards and bank transfer. For business purchases we provide tax-compliant invoices.