TBSL1/RFB-WIFI-DC

Multi-sensors Wi-Fi RTU

The TBSL1/RFB-WIFI-DC is a multi-sensor Remote Telemetry Unit (RTU) that uses 2.4 GHz Wi-Fi connectivity for reliable data transmission over local networks. This DC-powered version is designed for fixed installations where external power is available, offering stable operation, low idle current, and industrial-grade reliability. It supports multiple sensor interfaces and is suitable for building automation, environmental monitoring, and industrial IoT applications.

Datasheet

Features

Key capabilities and advantages

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2.4 GHz Wi-Fi connectivity compliant with IEEE 802.11 b/g/n.
Supports MQTT(S) communication protocol.
Multi-sensor support: SDI-12, analog, and pulse inputs.
Ultra-low idle current for efficient operation.
Internal flash memory for measurement data storage.
Real-time clock with NTP synchronization.
Easy configuration via USB interface.
DC-powered design for permanent installations.
Rugged IP67 aluminium housing for outdoor and industrial use.

Specification

Technical specifications and parameters

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Frequency band	2.4 GHz.
Frequency range	2.412 – 2.484 GHz.
Standards	IEEE 802.11 b / g / n.
Protocols	MQTT(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 and 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.