- Dual-mode NB-IoT and LTE Cat-M1 connectivity.
- Supports MQTT(S), HTTP(S), FTP(S) communication protocols.
- Multi-sensor support: SDI-12, analog, and pulse inputs.
- Ultra-low idle current for efficient operation.
- Internal data storage with embedded flash memory.
- Real-time clock with NTP synchronization.
- Easy configuration via USB interface.
- Rugged IP67 aluminium housing for outdoor use.
- Designed for harsh and industrial environments.
TBSL1/RFB-NbIOT-CatM1-DC
Multi-sensors Nb-IOT Cat M1 dual mode RTU
The TBSL1/RFB-NbIOT-CatM1-DC is a multi-sensor Remote Telemetry Unit (RTU) supporting dual-mode NB-IoT and LTE Cat-M1 communication. This DC-powered version is designed for fixed and industrial installations requiring reliable cellular connectivity, ultra-low power consumption, and long-term stability. It is suitable for environmental monitoring, utility systems, and industrial IoT applications.
Features
Key capabilities and advantages
Specification
Technical specifications and parameters
| Modem | Dual-mode NB-IoT / LTE Cat-M1. |
| Cellular Frequencies | LTE Cat-M1: (B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B27 / B28 / B66 / B85) and NB-IoT (B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B28 / B66 / B71 / B85). |
| Protocols | MQTT(S) / HTTP(S) / FTP(S). |
| Supported sensor types | Multi. |
| SDI-12 | v1.4. |
| Analog inputs | 2 × configurable inputs/Voltage: 0–2.5 V/Current: 4–20 mA. |
| Pulse input | 1 × input/Voltage: 0–3 V/Maximum frequency: 1 Hz. |
| Sensor connectors | 2 × LLT-M14BMC07 / SDI-12 / analog / pulse signals multiplexed. |
| Power supply | External DC power supply. |
| Supply voltage | 6–18 V DC. |
| Idle current | 400 µA. |
| Battery | None. |
| Power connector | –1 × LLT-M14BMC05. |
| Configuration interface | USB. |
| Configuration port | USB-B. |
| Measurement storage | 128 Mbits embedded flash. |
| Real-time retained | Yes. |
| Real-time synchronization | NTP server. |
| Protection | Waterproof. |
| Material | Aluminium. |
| Ingress protection | IP67. |
| Housing details | SP-AG-FA3-1 family. Single-piece gasket. TNC antenna connector. Gore-Tex vent. IP67 circular panel connector. |
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