HW-group NB-2xOut – IoT relay control for protection against water leakage and water ingress
HW-group NB-2xOut
Water leaks or flooding are among the most serious threats to server rooms, data centers, and industrial facilities. The NB-2xOut from HW-group is a compact IoT device with two relay outputs that reliably control external devices such as pumps, alarm systems, or warning lights. This enables immediate countermeasures when water ingress is detected, helping to prevent damage.
The NB-2xOut communicates via Narrowband IoT (NB-IoT) directly with the SensDesk portal or HWg-Cloud. It is therefore ideal for remote locations without LAN/WiFi infrastructure. Thanks to SensDesk integration, relays can be switched both manually and automatically – for example, triggered by alarms from other water leakage sensors. Typical use cases include activating pumps upon water ingress or switching warning lights for quick localization.
Technical Features
- 2 relay outputs (DO): latching relays, manual or automatic control
- IoT connectivity: Narrowband IoT for energy-efficient data transmission
- Alarm integration: automatic actions triggered by water leak alarms from other devices
- Data logger: stores up to 250,000 events for traceability
- Power supply: internal battery (up to 3 years) or external 5V adapter
- Robust design: metal housing, IP40, –10 to +70 °C, wall or DIN-rail mounting
- Security: NB-Push, CoAP, HTTPS portal access with user accounts
Water Protection & Countermeasures
In combination with WLD sensors or water leak detectors, the NB-2xOut provides an effective protection solution against water ingress. Once a leak is detected, it can automatically activate pumps to reduce flooding. At the same time, warning lamps or acoustic signals can be triggered, ensuring maintenance teams can respond immediately.
Typical Applications
- Data centers: pump control for water under raised floors
- Server rooms: automatic reaction to condensation water or pipe leaks
- Building technology: alarm and emergency control for basements or technical rooms
- Industrial facilities: triggering emergency pumps and warning systems
- IoT environments: integration with SCADA via SensDesk API
Integration & Software
The device is part of the SensDesk ecosystem and can be managed through HWg-Cloud or on-premise instances. Relay actions can be defined based on alarm notifications from other IoT devices such as the NB-2xIn (digital inputs for water leak sensors). Through XML, SNMP, and open APIs, integration with SCADA and IoT platforms such as Azure or AWS is possible.
Automated Control & Notifications
- Manual: control relays via the SensDesk web interface
- Automatic: e.g., activate pump system when a water leak alarm is received
- E-mail & push: notifications to up to 5 recipients
- SMS/voice: with HWg-SMS-GW3 for enhanced safety
Versions & Package Contents
- NB-2xOut: standard model with 2 relay outputs, battery included
- NB-2xOut TSET: includes NB-IoT SIM (3 years), battery, power adapter, antenna
Summary
Can the NB-2xOut directly detect water ingress?
No, it works in combination with water leak sensors or systems such as NB-2xIn to receive water-related alarms and then activate pumps or warning systems.
How are pumps or alarms controlled?
Through its two relay outputs (DO), they can be switched manually or automatically, also in combination with alarm notifications from SensDesk peer devices.
Is the device suitable for remote locations?
Yes, thanks to NB-IoT connectivity, secure communication is possible without LAN/WiFi, and the internal battery provides up to 3 years of operation.
NB-2xOut: Smart IoT Control with Digital Outputs
