Specifications

📦 Product Overview

The Dragino LHT65S is a long-range LoRaWAN sensor designed for monitoring temperature and humidity. It features:​

• A built-in temperature and humidity sensor.

• An external sensor connector for additional measurements.

• Compatibility with LoRaWAN v1.0.3 Class A protocol.

• A built-in 2400mAh non-rechargeable battery, supporting up to 10 years of operation (depending on usage).​

Ideal applications include smart agriculture, cold chain monitoring, building automation, and smart cities. ​

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📐 Technical Specifications

Built-in Temperature Sensor

• Resolution: 0.01 °C

• Accuracy: ±0.3 °C

• Long-term Drift: < 0.02 °C/year

• Operating Range: -40 to 80 °C​

Built-in Humidity Sensor

• Resolution: 0.04 %RH

• Accuracy: ±3 %RH

• Long-term Drift: < 0.02 %RH/year

• Operating Range: 0 to 96 %RH

External Temperature Sensor (E1)

• Resolution: 0.0625 °C

• Accuracy:

  • ±0.5 °C from -10 °C to +85 °C

  • ±2 °C from -55 °C to +125 °C

• Operating Range: -55 to 125 °C

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🔋 Power Consumption

• Idle Mode:

  • Without external sensor: 3 µA

  • With E1 sensor: 4 µA

• Transmit Mode: Maximum 130 mA

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📡 LoRaWAN Communication

• Protocol: LoRaWAN v1.0.3 Class A

• Frequency Bands: CN470, EU433, KR920, US915, EU868, AS923, AU915

• Join Method: Over-The-Air Activation (OTAA)

• Uplink Interval: Default every 20 minutes (configurable)​

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🛠️ Configuration & Activation

• Activation:

  • Press the ACT button for more than 3 seconds to activate the device and join the LoRaWAN network.

• Deactivation:

  • Quickly press the ACT button 5 times to deactivate and enter deep sleep mode.

• Configuration:

  • Supports AT commands for parameter changes.

  • Remote configuration via LoRaWAN downlink.

  • Firmware upgradable via the program port.

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📊 Data Payload & Decoding

• Uplink Payload Structure (FPort=2):

  Bytes	Description
  0-1	Battery Voltage
  2-3	Built-in Temperature
  4-5	Built-in Humidity
  6	External Sensor Type ID
  7-10	External Sensor Value

• Decoding:

  • Dragino provides payload decoders compatible with platforms like The Things Network (TTN).

  • Decoders can be downloaded from Dragino's GitHub repository:

    • Dragino Payload Decoders

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📄 Documentation & Resources

• Product Page: Dragino LHT65S Product Page

• User Manual: LHT65S User Manual

• Payload Decoders: Dragino GitHub - Payload Decoders​