The HW group HTemp‑485 T3419 is a precise and versatile temperature and humidity sensor with an RS‑485 interface, designed for demanding monitoring applications in industry, IT, and building management. Its extended temperature range from –30 °C to +105 °C and humidity measurement from 0–100 % RH make it ideal for environments subject to wide temperature fluctuations or specific climate requirements. The integrated LCD display provides real-time readouts of all measured values, while direct Poseidon2 integration ensures quick setup within existing monitoring networks.

With its robust construction and energy-efficient electronics, the HTemp‑485 T3419 is suitable for both indoor and protected outdoor environments. The RS‑485 interface supports terminal block and RJ45 connectors, offering flexible integration into various infrastructures. Consuming only 10 mA during operation, it is ideal for continuous use and long-term applications in complex monitoring systems.

The sensor also provides valuable additional calculations: dew point, absolute and specific humidity, and enthalpy. These advanced parameters deliver detailed insights for climate analysis and process monitoring—crucial for HVAC systems, environmental supervision, and industrial processes. With measurement accuracy of ±0.4 °C for temperature and ±2.5 % RH for humidity, the HTemp‑485 T3419 provides reliable data for both technicians and decision-makers.

With its IP40 protection rating, the HTemp‑485 T3419 is shielded against dust and light water exposure, making it highly suitable for use in demanding industrial environments. Its compact design and included 1 m connection cable enable fast installation across multiple setups—from server racks to control panels.

Technical Specifications

• Temperature range: –30 °C to +105 °C
• Temperature accuracy: ±0.4 °C
• Humidity range: 0–100 % RH
• Humidity accuracy: ±2.5 % RH
• Calculated parameters: dew point, absolute humidity, specific humidity, enthalpy
• RS‑485 interface with terminal block and RJ45 connection
• Compatible with HW group Poseidon2 4002 & Poseidon 2250
• LCD display for real-time measurement visualization
• Protection rating: IP40
• Power supply: 12 V (Poseidon) or external 10–35 V DC
• Power consumption: 10 mA
• Dimensions: 110 × 90 × 40 mm
• Weight: 218 g
• 1 m cable for flexible installation

Advantages of the HW group HTemp‑485 T3419 Sensor

• Extended temperature range up to +105 °C – ideal for industrial and HVAC applications
• Precise real-time display of measurements via integrated LCD
• Seamless integration into HW group Poseidon systems
• Energy-efficient operation through low power consumption
• Additional parameters such as dew point and enthalpy for comprehensive climate analysis
• Rugged design for humid and demanding environments

Typical Applications

• Server room and data center monitoring
• Food industry – cold chain control and storage conditions
• Pharmaceutical storage – stable climate control for sensitive products
• Environmental monitoring for urban and industrial projects
• Building management and smart building monitoring
• HVAC system control and process supervision

Integration with HW group Systems

The HTemp‑485 T3419 connects easily via RS‑485 to Poseidon2 monitoring devices, providing real-time value transmission. Through cloud platforms such as SensDesk.cloud, these data can be centrally managed and analyzed. Configurable threshold alerts enable proactive climate management—when limits are reached, automatic notifications are sent via email, SMS, or SNMP alerts.

Continuous Operation and Reliability

Thanks to its industrial-grade sensor componentry and efficient electronics, the HTemp‑485 T3419 is built for continuous, long-term operation. Reliable measurement remains stable even under demanding conditions—making it ideal for critical infrastructure and industrial processes where precise climate monitoring is essential.

The HW group HTemp‑485 T3419 combines precise temperature and humidity measurement with advanced climate parameters in a robust RS‑485 device. With its extended measurement range, integrated LCD, and Poseidon compatibility, it provides a professional, energy-efficient solution for industry, IT, building automation, and environmental monitoring. It is the trusted choice for professionals seeking accurate climate supervision combined with intelligent system integration.