HW-group Perseus Energy 242 – Versatile LAN solution for protection against water leakage and water ingress
HW-group Perseus Energy 242
Unnoticed water leaks pose a major threat to server rooms, data centers, boiler rooms, and industrial facilities. Even small amounts of liquid can lead to IT failures, production downtime, or electrical damage. The Perseus Energy 242 from HW-group provides a robust, scalable solution designed for comprehensive energy monitoring as well as water ingress detection and alarm reporting. With its combination of M-Bus Master, RS-485, 1-Wire sensors, and a WLD port for water leakage detection, it ensures reliable operational security.
Housed in a compact DIN-rail format, the device offers LAN connectivity. It functions as a flexible gateway, processing up to 100 sensors and 1000 variables, and supports open protocols such as SNMP, Modbus/TCP, MQTT, and XML. Thanks to this versatility, the Perseus Energy 242 is ideal for critical infrastructure projects where water ingress protection and precise monitoring are top priorities.
Key Features of Perseus Energy 242
- Connectivity: LAN (RJ45, 100BASE-T) with integrated web server for configuration & monitoring
- Sensor integration: 4x RJ11 for up to 8 1-Wire UNI sensors (temperature, humidity, current, voltage)
- RS-485 Modbus/RTU: connection of meters and industrial sensors
- M-Bus Master: direct connection to water, electricity, or gas meters
- WLD port: supports water detection cables up to 185 m in length
- Digital I/Os: 2x inputs (DI) with S0 pulse counter, 1x output (DO) for relay control
- Alarm system: notifications via e-mail, SNMP trap, SMS/voice call through external gateway (SMS-GW3)
- Data logging & analysis: Lua scripting, scheduling, and virtual sensors for extended evaluations
- Security: Radius IEEE 802.1X, HTTPS with certificates, user management, and IPv6 support
Protection Against Water Leakage and Ingress
Especially in data center and server room monitoring, the Perseus Energy 242 ensures immediate response in the event of liquid ingress. Using the WLD cable system, raised floors, pipelines, or cooling devices can be monitored. If conductive liquids are detected, alarms are sent directly via e-mail or SNMP. With an SMS gateway, immediate SMS or voice call notifications are possible. Additionally, the digital relay output can trigger external devices such as pumps or sirens.
Typical Applications
- Data centers & server rooms: fluid detection under raised floors, in HVAC units, or near power systems
- Boiler rooms & technical facilities: prevention of flooding, pipe bursts, or condensation damage
- Industrial plants: integration with energy and water sensors for secure operations
- Pharma & food industry: HACCP-compliant monitoring with water leakage alerts
- Logistics & storage: prevention of moisture damage in critical storage areas
Integration & Portals
With the Meters API, data from other devices (e.g., STE2 R2, SNMP-enabled UPS units) can be read and incorporated into analyses. Integration with the SensDesk portal (SaaS or On-Premise) provides extended features such as alarm escalation, PDF reports, multi-user management, and long-term graphical evaluations. For smaller projects, the free HWg-cloud.com offers essential functions.
Mobile Monitoring
The HWg Monitor App (iOS & Android) gives users mobile access to sensor data anytime, anywhere. Water leak alarms and environmental parameters are clearly displayed, enabling immediate action. Widgets offer quick overviews directly on the smartphone home screen.
Versions of Perseus Energy 242
- Perseus Energy 242: base version without power adapter, ideal for integration into existing systems
- Perseus Energy 242 Set: starter kit including EU power adapter for immediate installation
Summary
Can the Perseus Energy 242 detect water leaks?
Yes, water leak detection cables (up to 185 m in length) can be integrated via the WLD port, reliably detecting and reporting liquid presence.
How does alarm notification work in case of water ingress?
The device alerts via e-mail, SNMP trap, or, using an external SMS gateway, also via SMS or voice call. Through SensDesk portals, escalations and reports can be configured.
Is the Perseus Energy 242 suitable for industrial environments?
Yes, its robustness, M-Bus and RS-485 support, and external sensor integration options make it ideal for industrial, building, and energy management applications.
Perseus Energy 242
