The HW group HTemp‑1Wire is a compact dual sensor that combines precise temperature and humidity measurements in one device. It is designed for professional monitoring solutions and can be used in a wide range of environments — from server rooms and data centers to offices, laboratories, and smart buildings. Thanks to its compatibility with HW group devices such as Poseidon2, Ares, and HWg‑STE2, the sensor integrates seamlessly into existing monitoring systems and provides accurate real-time data for optimized climate and safety management.

The sensor operates digitally via the 1‑Wire RJ11 interface, also known as MicroLan. This technology ensures a stable connection with minimal cabling requirements. The HTemp‑1Wire transmits measurements quickly and reliably, allowing temperature and humidity changes to be detected immediately. With a measurement range of –10 °C to +80 °C and 0–100 % RH, it covers the entire span of typical indoor and environmental conditions — ideal for critical IT infrastructures as well as controlled climate environments.

With its three-meter connection cable, the sensor can be flexibly positioned — whether mounted directly on a server cabinet, wall, or ceiling. Its daisy‑chain function allows connection with additional HTemp‑1Wire devices using a T‑Box or splitter, making it especially useful for large‑scale installations that require multiple measurement points, such as data centers, production environments, or event facilities.

Installation of the HTemp‑1Wire is quick and simple thanks to plug‑and‑play functionality. Once connected, the HW group monitoring device automatically detects the sensor. Thresholds for temperature and humidity can be easily configured through the web interface, and if exceeded, immediate alarm notifications are triggered by email, SMS, or SNMP. This ensures that environmental conditions remain within safe limits at all times — without manual intervention.

Technical Specifications

• Combined sensor for simultaneous temperature and humidity measurement
• Temperature range: –10 °C to +80 °C
• Humidity range: 0–100 % RH
• 3 m detachable RJ11 cable for flexible installation
• 1‑Wire communication (MicroLan) with daisy‑chain support
• Automatic sensor detection by HW group devices
• Compatible with Poseidon2, Ares, HWg‑STE, and STE2
• Supports LAN‑, GSM‑, web‑, and app‑based monitoring

Advantages of the HW group HTemp‑1Wire Sensor

The HTemp‑1Wire combines smart functionality with ease of use. Its reliability and compatibility make it the preferred sensor for indoor climate monitoring in IT infrastructures and smart buildings. Alongside its high measurement accuracy, it excels in flexibility for installation and integration.

• Precise real‑time monitoring of temperature and humidity
• Seamless integration into HW group monitoring devices
• Simple mounting on walls, ceilings, tables, or racks
• Daisy‑chain capability for multiple sensor connections
• Instant alerting when thresholds are exceeded or underestimated
• Ideal for IT, office, laboratory, and archive environments

Typical Applications

• Server room and rack climate monitoring
• Data centers and network infrastructures
• Smart home and smart building applications
• Offices and classrooms for improved air quality
• Museums and archives for preservation of sensitive exhibits
• Laboratories and technical spaces with controlled environments

Integration with HW group Monitoring Systems

The strength of the HTemp‑1Wire lies in its full compatibility with the HW group monitoring ecosystem. Through devices such as Poseidon2 or HWg‑STE2, measurement data can be captured, graphically displayed, and analyzed. Integration with cloud platforms such as SensDesk.cloud allows centralized management across multiple locations with remote access to all sensors.

In combination with the Ares LTE device, temperature and humidity data can even be transmitted via mobile networks — ideal for remote installations or mobile technical sites. The sensor operates fully digitally, eliminating signal loss and minimizing measurement errors. Users thus receive accurate and consistent climate data at all times.

Reliability and Service Life

Built from durable materials and featuring digital data transmission, the HTemp‑1Wire is designed for long-term operation. Its measurement accuracy remains stable for many years. Maintenance and replacement are straightforward — the sensor can be unplugged and replaced during live operation without any downtime. This ensures maximum operational safety with minimal effort.

The HW group HTemp‑1Wire is a powerful, versatile dual sensor for temperature and humidity measurement in professional monitoring applications. Whether mounted in racks, rooms, or laboratories, this sensor ensures precise and consistent climate data. With its digital 1‑Wire technology, daisy‑chain expandability, and full integration into Poseidon2 and STE2 systems, it is a future‑ready solution for anyone seeking reliability, data precision, and ease of use.