Product Specifications
Manufacturer: SENECA s.r.l.
Model Number: RTU-LP-ST
Category: Low Power GSM/GPRS Remote Terminal Unit
Wireless Connectivity: Quad-band GSM/GPRS Class 10
Serial Protocols: Modbus RTU Master/Slave (RS-232/RS-485)
I/O Configuration: 8 DI, 2 AI, 2 Pulse Counters, 2 DO (Relay)
Power Management: Optimized for Battery and Solar Operation
Product Description
The SENECA RTU-LP-ST is a specialized, ultra-low power remote terminal unit (RTU) designed for high-efficiency telemetry and data logging in locations where mains power is unavailable. Part of SENECA’s advanced telecontrol range, this unit is the ideal solution for monitoring remote water networks, gas pipelines, and environmental stations using battery or solar power systems.
Advanced Telemetry and Data Management
Equipped with a built-in Quad-band GSM/GPRS modem, the RTU-LP-ST facilitates seamless wireless communication. It functions as an intelligent data logger, capable of storing time-stamped measurements in its internal flash memory or on an external microSD card. The unit supports various industrial communication protocols, including Modbus RTU via its RS-232/RS-485 interfaces, allowing it to act as a central gateway for distributed sensors and peripheral devices.
Optimized for Remote Environments
Power management is the core strength of the RTU-LP-ST. Its hardware is engineered to remain in a deep-sleep mode, consuming minimal energy, and waking up only for scheduled measurements or alarm events. When an anomaly is detected, it can instantly send SMS alerts or transmit data via GPRS to a central server using FTP or SMTP. Its robust I/O suite, including digital inputs, analog inputs, and high-speed pulse counters, provides comprehensive monitoring capabilities for flow meters, level sensors, and pressure transducers.
Industrial Reliability Features
- Versatile I/O: 8 digital inputs for status monitoring and 2 analog inputs for precise sensor readings.
- Redundant Storage: Ensures data integrity during communication outages via local memory buffering.
- Easy Configuration: Simplifies setup through dedicated software tools for managing alarms, thresholds, and logging intervals.
- Rugged Build: Compact DIN-rail mountable design suitable for installation in outdoor control cabinets.
Typical Applications
- Remote water well and reservoir level monitoring
- Cathodic protection monitoring for gas pipelines
- Smart metering and energy consumption tracking
- Environmental and meteorological data acquisition stations
Resources & Documentation
GSM Low Power Remote Terminal Unit - GPRS Modbus Datalogger | SENECA RTU-LP-ST
Product Specifications
Manufacturer: SENECA s.r.l.
Model Number: RTU-LP-ST
Category: Low Power GSM/GPRS Remote Terminal Unit
Wireless Connectivity: Quad-band GSM/GPRS Class 10
Serial Protocols: Modbus RTU Master/Slave (RS-232/RS-485)
I/O Configuration: 8 DI, 2 AI, 2 Pulse Counters, 2 DO (Relay)
Power Management: Optimized for Battery and Solar Operation





