Description
Perseus Monitoring 155
Perseus Monitoring 155 is a comprehensive 1U monitoring solution designed for 19″ rack installations in data centers, AV setups, and telecommunication sites. It supports external physical sensors (°C, %RH, A, V, etc.), dry contact detectors, and Water Leak Detection (WLD) sensing cables. Additionally, it allows the integration of third-party meters via LAN or Modbus/RTU for expanded monitoring capabilities.
Key Features & Connectivity
- Dual connectivity: Ethernet (RJ45) and LTE backup ensure uninterrupted monitoring even during network failures.
- Supports up to 100 external sensors with 1,000 variables for comprehensive data collection.
- 8 x RJ11 ports for 1W-UNI sensors (temperature, humidity, voltage, current, and more).
- 16 x DI ports (dry contacts) for external detectors like smoke, door status, and fan failure.
- 1 x WLD input for external water leak detection cables.
- 4 x relay outputs for controlling AC units, fans, alarms, or door access.
- Power options: 12V DC, -48V DC (telco standard), or PoE.
Data Collection & Integration
- Combines data from local sensors and other HWg devices connected via LAN.
- Advanced Lua scripting, calendar, and periodic scheduling for automated responses.
- Supports SNMP Traps, email alerts, and SMS/voice call notifications (via LTE or external SMS gateway).
- Compatible with Open API protocols: XML, Modbus-TCP, MQTT.
Professional Monitoring & Alerts
The Perseus Monitoring 155 integrates seamlessly with SensDesk technology, providing a powerful remote monitoring and alerting platform. With an internal LTE modem, it remains operational even during network failures.
Mobile App: HWg Monitor
- Monitor all connected sensors via LAN or SensDesk Portal.
- Available for Android & iOS.
- Ideal for real-time status monitoring on mobile devices.
Typical Applications
- Remote technical room and infrastructure monitoring.
- Data center / single rack monitoring.
- Telecommunication site monitoring.
- Industrial automation and environmental monitoring.

Technical Specifications
- Ethernet: RJ45 (100BASE-T)
- LTE: Global
- RS-485 (Modbus-RTU): 1x terminal block (With 12V)
- Operating Temperature: –30°C to +65°C (–22°F to +185°F)
- Size: 1U rack-mount (35 x 111 x 290 mm)
- Security: IEEE 802.1X, HTTPS, Admin/User accounts
- Warranty: 24 months
Why Choose Perseus 155
- Versatile connectivity with LTE backup for uninterrupted operation.
- Seamless integration with third-party meters and devices via Open API.
- Professional-grade security features with IPv6 & SNMP v3 support.
- Comprehensive alerting via email, SMS, SNMP traps, and voice calls.
- Powerful SensDesk portal integration for remote monitoring and automation.
HW Group Cloud Portals

Free HWg-cloud.com portal service:
- Send email alerts from the portal (e.g., for a missing sensor) with long-term reliability.
- Alerts for disconnected or invalid devices are available via email.
- View a single-value graph with short history.
- Alarm escalation via email supported.
- Remote relay output switching based on sensor data.
- Centralised alert overview and management.
- Free service provided by HW Group.


Paid portal service:
- Includes all features of HWg-cloud.com.
- Alerts via email, SMS, and voice calls.
- Virtual sensors in the portal (e.g., averaging multiple sensors).
- Multi-graph support with several years of historical data.
- User account API available via SNMP or XML.
- Automated reports in PDF format.
- Multi-user account support.
- SensDesk.com (SaaS service) is available, or you can use any other portal provider.
- SensDesk Portal On-Premise – run your own portal on your server.











5 Devices | 1 User | 30 Day Log | 1 Report




Perseus Monitoring 155





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