Dragino LHT65S-EU868-E3 LoRaWAN Temperature and Humidity Sensor with External Antenna and External Temperature Probe

The Dragino LHT65N-EU868-E3 is the variant of the LHT65N with an external antenna. It is a LoRaWAN-based sensor for simultaneous acquisition of indoor climate and a second, application-specific measured variable. The external antenna allows for flexible alignment and placement outside the sensor housing, which can be particularly advantageous when installing in metallic environments or difficult radio conditions.

This variant is suitable for applications where indoor climate and a defined process point are to be monitored simultaneously, such as a cooling unit, flow or return line, or an adjacent control cabinet.

The integrated datalog function ensures that no measurement data is lost even during temporary connection failures. Buffered values are automatically retransmitted after the connection is restored.

Features:

• LoRaWAN v1.0.3 Class A, frequency band EU868
• External antenna (SMA connector)
• Integrated temperature and humidity sensor
• External temperature sensor included
• Datalog function with automatic retransmission
• Configuration via AT commands and LoRaWAN downlink
• Firmware update via programming interface
• Status LED for diagnosis
• Wall mounting
• Multi-year battery life (depending on transmission interval)

Internal Temperature Sensor:

• Resolution: 0.01 °C
• Accuracy: typ. ±0.3 °C
• Measuring range: −40 to 80 °C

Internal Humidity Sensor:

• Resolution: 0.04 %RH
• Accuracy: typ. ±3 %RH
• Measuring range: 0 to 96 %RH

External Sensor:

• Resolution: 0.0625 °C
  
• Accuracy: ±0.5 °C (−10 to +85 °C), ±2 °C (−55 to +125 °C)
  
• Measuring range: −55 to +125 °C

Areas of Application:

• HVAC monitoring in office and commercial properties
  
• Cold chain and warehouse monitoring
  
• Facility management (server and technical rooms)
  
• Process monitoring with redundant or differentiated measurement point acquisition

Documents:

• Wiki