HW-group STE2 LITE

Water damage is one of the most common causes of failures in IT infrastructures, building technology, and industrial facilities. Especially in server rooms or data centers, even a few drops from a leak can have drastic consequences: short circuits, IT outages, or costly repairs. With the HWg-STE2 LITE, HW-group offers a versatile IoT monitoring system that reliably monitors not only temperature but also other environmental parameters such as humidity or water ingress. This creates an effective early warning system for companies that need to safeguard their critical infrastructure.

Thanks to its network connectivity via LAN or Wi-Fi, the STE2 LITE becomes a compact monitoring solution that sends alarms directly via e-mail – or via external gateways even through SMS and voice calls. This makes it possible to immediately detect and report water ingress, temperature deviations, or other critical events in real time. In combination with SensDesk portals or the HWg-Cloud, extended alerting and management options are available, ensuring professional remote monitoring.

Particularly valuable for water ingress protection is the ability to integrate water sensors such as spot detectors or area-based WLD cables. Even the smallest detected amount of liquid triggers an immediate alarm. This makes the STE2 LITE ideal for critical use cases such as condensate detection under air conditioners, pipe leak monitoring, or for safeguarding moisture-sensitive areas such as archives, storage, or museums.

An additional advantage: through daisy-chaining, multiple sensors can be combined so that with only one RJ11 port, up to four sensor values can be captured. Thus, the compact device covers a wide range of measurement requirements and remains flexibly expandable – whether for temperature monitoring, humidity control, or leakage detection.

Technical Features & Advantages

• Compact IoT monitoring device for LAN and Wi-Fi
• Support for up to 4 sensor values via daisy-chain
• Immediate e-mail alerts in case of threshold violations
• Optional SMS and voice alarms via external gateways (SMS-GW3 / LTE)
• Compatibility with a wide range of sensors: temperature, humidity, CO2, VOC, light, voltage 0–230V, current 4–20mA
• Integrated web server for simple browser-based setup
• HTTPS and SNMP support for network integration
• HWg Monitor mobile app for Android & iOS

Protection Against Water Damage – Sensor Integration

The STE2 LITE can seamlessly integrate water leak detection sensors, including point sensors for local leaks and WLD sensor cables for area monitoring. In data centers, this enables raised floors or critical pipeline areas to be secured. Even the smallest amount of liquid activates an alarm, immediately sent by e-mail or optionally by SMS to the responsible technicians. Thanks to reusable sensor cables, the operation remains cost-efficient and sustainable.

Typical Applications

• Server rooms & data centers: protection against air conditioning condensate and leaks in raised floors.
• Building technology: water alarms in moisture-sensitive basements or technical areas.
• Pharmacies & healthcare: monitoring sensitive storage rooms with combined temperature and leakage sensors.
• Food & logistics: safeguarding cold chains with temperature sensors and early moisture detection.
• Museums & archives: preventing damage to valuables caused by unnoticed water leaks.

Alerts & Portal Integration

The STE2 LITE offers flexible alerting methods:

• E-mail: direct notifications from the device
• SMS & voice calls: via external gateway (SMS-GW3 / LTE) independent of the portal
• HWg-Cloud: free portal for up to 20 devices, with central alarm management and status notifications
• SensDesk Technology: paid professional portal with PDF reports, multi-user support, and API interfaces

Mobile App – HWg Monitor

With the free HWg Monitor app (iOS/Android), administrators can monitor all sensor values from anywhere. Whether temperature, humidity, or water leak detection – values are accessible anytime on mobile devices, including alarm status information.

Can the STE2 LITE detect water ingress?

Yes, by integrating WLD sensor cables or water sensors, the device immediately detects liquids and reliably reports them.

How is alarm management handled?

By default, the device sends e-mail alarms. Through gateways or portals, SMS and voice alarms can also be enabled and centrally managed.

Is the STE2 LITE suitable for industrial facilities?

Yes, it is ideal for industrial and commercial applications where temperature or humidity monitoring and leak detection are critical.