Device Description

ASTgsm LTE is a next-generation controller designed for remote management of street and outdoor lighting installations. The controller utilizes the latest LTE CAT M1 cellular communication standard, providing reliable, secure, and low-power data transmission for continuous monitoring and control.

Designed for installation on a standard 35 mm DIN rail, the controller occupies 6 DIN modules and integrates six independently programmable relay outputs, three digital inputs, an interface for the ASTlux digital light sensor, an RS-485 interface for power quality analyzers, a backup battery input, and an integrated Wi-Fi communication module.

Using its built-in GPS receiver, ASTgsm LTE automatically determines its geographical location and calculates optimal astronomical switching times based on the local sunrise and sunset. Configuration, monitoring, and diagnostics are performed remotely through the ASTonline cloud platform and dedicated mobile applications.

System Capabilities

ASTgsm LTE provides independent programming of six relay outputs and supports three digital inputs for connection of external devices, such as cabinet door switches, alarm contacts, or other control signals.

The controller operates with the ASTlux digital light sensor, enabling automatic control of a single lighting controller or multiple controllers based on the actual ambient light level.

The integrated GPS receiver provides:

• Automatic time synchronization.
• Automatic geographical positioning.
• Automatic controller localization on the system map.

Communication with the controller is available through two independent interfaces:

• LTE CAT M1 communication via the ASTonline cloud platform.
• Local Wi-Fi communication using the dedicated ASTgsm mobile application.

Additionally, the ASTgsm Service application enables remote maintenance and service operations using LTE communication.

Power Network Monitoring

ASTgsm LTE supports intelligent power quality monitoring through compatible analyzers communicating via the MODBUS RS-485 protocol.

The controller can continuously read and archive the following electrical parameters:

• Voltage
• Current
• Active Power
• Reactive Power
• Active Energy
• Reactive Energy

An advanced alarm management system generates server notifications and SMS messages whenever configured electrical thresholds are exceeded or other alarm conditions occur.

Key Features

• Remote management through the responsive ASTonline web application, accessible from desktop and mobile devices.
• Local configuration using the ASTgsm mobile application via Wi-Fi.
• Remote service and diagnostics using the ASTgsm Service application over LTE.
• Secure system access with user accounts and WPA/WPA2 encrypted Wi-Fi communication.
• Plug & Play installation – after power-up, the controller automatically registers with the server and is immediately ready for assignment to a user account.
• Server communication without requiring a public IP address.
• Optional embedded Chip SIM technology for increased reliability compared to conventional SIM cards.
• Automatic GPS-based time synchronization.
• User-adjustable switching corrections up to ±240 minutes.
• Automatic controller positioning on the system map.
• LED indicators showing power, communication, input, and output status.
• Multi-level user management (Administrator, User, Observer) with support for sub-accounts.
• Advanced alarm system including:
  • Power failure detection.
  • Output status monitoring.
  • Overcurrent alarms.
  • Power limit alarms.
  • Additional configurable alarm events.
• Server-side storage of alarms and electrical measurements.
• Group control of multiple controllers based on measurements from the ASTlux digital light sensor.
• Automatic daylight saving time adjustment with optional disabling.
• Independent seasonal switching corrections for summer and winter.
• Six independently programmable relay outputs with up to four programmable operating periods, including three night-break intervals.
• Calendar exception scheduling with recurring event support.
• Manual service activation of outputs for:
  • 1 minute
  • 10 minutes
  • 30 minutes
  • Continuous operation
• Output operation history logging.
• Relay operating time counters.
• Open REST API for integration with third-party control and Smart City platforms.

Technical Specifications

Power Supply

• Supply voltage: 100–240 V AC
• Power consumption: < 3 W

Outputs

• 6 independently programmable relay outputs
• Relay rating: 5 A

Digital Inputs

• 3 potential-free digital inputs

Communication Interfaces

• LTE CAT M1 cellular communication
• Integrated Wi-Fi
• Built-in GPS receiver

External Interfaces

• RS-232 (3.3 V) interface for the ASTlux digital light sensor
• RS-485 interface for MODBUS power quality analyzers
• for communication with a power factor correction controller (MODBUS)
• Backup battery input for real-time clock backup

Antenna Connections

• 2 × MMCX connectors (LTE and GPS)

Installation

• 35 mm DIN rail mounting
• Width: 6 DIN modules

Optional Modules

• Backup battery module – 1 DIN module
• Power quality analyzer – 4 DIN modules

Environmental Conditions

• Operating temperature: −30°C to +70°C
• Protection rating: IP20