The Geolux SmartObserverPlus is a high-performance environmental datalogger designed for reliable data acquisition and remote monitoring. It supports a wide range of sensors through multiple communication interfaces, features low-power operation with an integrated MPPT solar charger, and offers flexible communication options for seamless deployment in remote monitoring applications.
| Parameter | Specification |
|---|---|
| Analog Inputs | 4 × 24-bit, configurable for voltage or current |
| Analog Sampling Frequency | 10 Hz (STARTER version); 200 Hz (all other versions) |
| Digital I/O | 4 channels |
| Digital Input Type | Pulse counter / Frequency counter |
| RS-232 | 2 channels |
| RS-485 / Modbus | 3 channels |
| SDI-12 | 2 channels |
| CAN | 1 channel |
| Ethernet | 10/100 Mbps |
| SD Card | 1 × MicroSD |
| Internal Flash Memory | 8 MB (STARTER version); 16 MB (all other versions) |
| USB Host | 1 × USB Flash Memory |
| USB Device | 1 × PC connection |
| Wireless Communication | Depends on the datalogger version: GPRS, LTE-M, NB-IoT, 3G, 4G (LTE/HSPA+), 5G, or KINEIS Satellite |
| MicroPython Scripting | Supported |
| Integrated Battery Charger | MPPT with charging current temperature compensation |
| Battery Charger Max. Current | 3 A |
| Controlled Power Outputs | 3 |
| Operating Power Consumption | Typical 0.85 W |
| Standby Power Consumption | < 0.012 W |
| Input Voltage Range | 9–29 VDC |
| Supported Batteries | Li-ion, LiFePO₄, Lead-acid, Gel, and AGM deep-cycle batteries |
| Battery Protection | Deep discharge protection |
| Operating Temperature Range | -40°C to +85°C |
| Relative Humidity Range | 0–99% RH (non-condensing) |
| GNSS Receiver | GPS / GLONASS / BeiDou (internal NMEA 0183) |
| Dual-SIM | Available on Dual-SIM and Dual-SIM-5G models |
| Communication Protocols | HTTP, HTTPS, FTP, SFTP, FTPS, MQTT, MQTTS, SSL, TLS 1.2, TLS 1.3 |
| Data Transmission Interval | Configurable from 1 minute to 24 hours |
| Device Configuration | Local via PC using USB; Remote via Hydroview Portal and API |
| Internal Parameter Monitoring | Battery voltage, battery charge status, input voltage, power consumption, internal temperature, internal relative humidity, modem signal strength, and attached equipment health status |
| Real-Time Clock | Internal RTC with supercapacitor backup power |
| Time Synchronization | GNSS / NTP / HTTP (±1 second synchronization accuracy) |
| Watchdog Timer | Internal hardware watchdog timer (WDT) |
| External Memory | MicroSD card up to 256 GB; USB Flash drive up to 256 GB |
| Internal Memory | 16 MB circular buffer using compact binary format |
| Internal Memory Capacity | Up to 2 years of data at a 15-minute scan interval; 1.3 years at a 10-minute scan interval |
| Data Retransmission | Automatic retransmission of stored data after interrupted communication, maintaining chronological order |
| Enclosure Material | Anodized aluminum |
| Enclosure Dimensions | 161 × 97 × 20 mm |
| Enclosure Protection | IP30 (Optional IP54 with sealing and connector caps) |
| Installation | DIN-rail mount |
| Weight | 400 g |
Flood Warning Systems
Meteorological Stations
Hydrological Monitoring
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