HW-group Perseus Monitoring 155

The HW-group Perseus Monitoring 155 is a professional monitoring system for critical infrastructures including data centers, telecom sites, and industrial facilities. With dual connectivity via LAN and an integrated LTE modem, it ensures continuous and reliable monitoring even during network outages. This makes the Perseus 155 a central platform for environmental monitoring, alarm management, and automation in high-availability environments.

The device supports up to 100 sensors and 1000 variables. With 8 × RJ11 ports for 1-Wire UNI sensors, an RS-485 Modbus/RTU port, 16 digital inputs for dry contacts, and 4 relay outputs, it enables flexible integration from temperature and humidity monitoring to energy measurement, door sensors, or smoke detectors, as well as automated control of external devices.

Technical Highlights

• 19“ rackmount (1U) design for professional environments
• Dual connectivity: LAN + integrated LTE modem
• 8 × RJ11 ports (1-Wire UNI), RS-485 Modbus/RTU
• 16 digital inputs (DI) and 4 relay outputs (DO)
• Lua scripting, virtual sensors, and scheduling for automation
• Datalogger with 250,000+ values, PDMS/Excel data export
• Alerts via email, SNMP trap, SMS & voice over LTE
• Secure communication: HTTPS, SNMPv3, Radius (802.1X), IPv6
• Flexible power: 9–30 VDC, -48 VDC, or PoE

Redundant Connectivity

The combination of LAN and LTE ensures maximum reliability. Even if the main LAN connection fails, alerts and cloud integration via LTE remain operational, keeping SensDesk dashboards, SaaS services, and mobile access fully active. This guarantees high-availability monitoring.

Automation & Relay Control

With 4 relay outputs, the Perseus 155 can directly control external systems such as HVAC, ventilation, access systems, or security alarms. In combination with Lua scripting and schedules, this enables advanced event-driven automation scenarios.

Logging & Reporting

A built-in datalogger stores over 250,000 measurements. Data can be processed with HWg-PDMS, exported to Excel, and used for compliance, energy, and trend reporting, supporting both real-time and long-term analyses.

SCADA & IoT Integration

Supporting SNMPv3, Modbus/TCP, MQTT, and XML, the device integrates easily into SCADA, IT monitoring, and IoT platforms. The Meters API allows aggregation of LAN device data (e.g. STE2 R2 or UPS), creating extended monitoring and alarm logic. With SensDesk SaaS or on-premise solutions, users benefit from PDF reporting, multi-user management, and alarm escalations.

Alarm Management

The Perseus 155 alerts immediately via email, SNMP trap, or SMS/voice thanks to the LTE modem. Escalations and reminders support SLA compliance. SensDesk integration extends functionality with centralized reporting and alarm handling.

Mobile Access

With the HWg Monitor app (iOS/Android), administrators access live values remotely. Widgets ensure instant visibility of key parameters and alarms on smartphones, regardless of whether the connection uses LAN or LTE.

Application Areas

• Data centers & server rooms – temperature, humidity, power & access monitoring
• Telecom sites – resilient dual connectivity for continuous operation
• Industrial plants – voltage, energy, and process monitoring via Modbus
• Pharma & food – HACCP-compliant monitoring with documentation
• Building automation – integration for access, HVAC, and fire control

Variants

• Perseus Monitoring 155: Base model with LTE modem, no accessories
• Perseus Monitoring 155 TSet: Starter kit with PSU, LTE antenna, and 3 m IP67 temperature sensor

Conclusion

The HW-group Perseus Monitoring 155 is an enterprise-grade platform for rack-based monitoring. With LAN/LTE dual connectivity, support for 100 sensors, robust alarm functions, and full integration with SCADA, IoT, and SensDesk cloud systems, it ensures resilience, flexibility, and future-proof monitoring for IT, telecom, and industrial sites.