
Introduction
The REye-200 is a radar water level sensor using 60GHz pulsed coherent radar technology. It can be used to monitor the level of sea, lakes, rivers and creeks, with a narrow field of view and fast measurement response time.
The sensor incorporates an ultra-low power microcontroller for data sampling, subsystem activation and overall system control, and can operate on a Lithium Thionyl battery supplying system for up to 10 years.
Modbus interface
The REye-200 is a low power RS485 Modbus radar sensor measuring distance to target, with a Modbus ASCII interface (9600 baud default, address 1) that connects to any device, and can be combined with a variety of Infinite’s products.
It is fully integrated with Itron City Edge, Cumulocity, Microsoft Azure, Amazon AWS, Losant and any platform via MQTT, using an ADS-300 NB-IoT/LTE-M or ADS-410 Itron RTU.
Enclosure and installation
The sensor is housed in a PVC enclosure rated IP67/68 for outdoor use, with an internal antenna and a 1.5 m 4-wire cable. Wiring: Green – RS485 A+, White – RS485 B, Brown – Power + (12VDC), Yellow – Ground.
Applications

- Water level at rivers, lakes and sea
- Flood monitoring
- Silo dry level monitoring
- Tank wet level monitoring
Ordering Codes
| Code | Description |
|---|---|
| REye-200 | 60GHz water level radar sensor, Modbus ASCII, IP67/68 |
Technical Characteristics
| Characteristic | REye-200 |
|---|---|
| Transmit frequency | 60 GHz, pulsed coherent radar |
| Range | 1-10 m, configurable in steps of 1, 2, 4, 6, 8, 10 m |
| Accuracy | ±2 mm @ 4 m, ±4 mm @ 10 m |
| Resolution | 1 mm |
| Field of view | Narrow |
| Connectivity | Modbus ASCII, 1.5 m 4-wire cable |
| Antenna | Internal |
| Power supply | 12 VDC |
| Consumption | 0.1 W, 80 mA maximum |
| Operating temperature | -40°C to +85°C |
| Protection | IP67/68 |
| Enclosure | PVC, for outdoor use |
| Dimensions | 50 × 50 × 70 mm (gland included) |
| Weight | 0.05 kg |
| Compliance | CE, RoHS (Directive 2002/95/EC) |
Product Datasheets
| Document | File |
|---|---|
| REye-200 — 60GHz Water Level Radar Sensor Datasheet | Download REye-200 datasheet V1 (PDF) |
| REye-200 — Radar Sensor Manual (Modbus registers & wiring) | Download REye-200 manual V1.2 (PDF) |
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