DRAGINO LoRaWAN LHT52 External Temperature Sensor

The DRAGINO LHT52 sets itself apart from typical LoRaWAN sensors by pairing an external NTC thermistor probe with a robust datalogger, enabling precise temperature monitoring in hard-to-reach or harsh environments. Unlike integrated-sensor units, the 3-meter cable allows the probe to be placed away from the device, protecting the electronics while measuring extreme temperatures from -40°C to +80°C.

Highlights

• External NTC thermistor probe with 3 m cable for flexible placement
• Wide measurement range: -40°C to +80°C with ±0.5°C accuracy
• LoRaWAN v1.0.3 Class A, supports EU868, US915, AU915, AS923, KR920, IN865, RU864
• Long battery life: up to 5 years on 2 x AAA batteries
• Stores up to 1500 historical records locally
• Configurable alarm thresholds for temperature alerts
• IP52-rated ABS enclosure for indoor/outdoor use

In daily use

Deploy the LHT52 in cold chains, server rooms, greenhouses, or industrial processes. The sensor transmits data at configurable intervals from 1 minute to 168 hours, ensuring you capture the right granularity for your application. The built-in datalogger prevents data loss during network outages, and the long battery life minimizes maintenance visits.

Full specifications

• Sensor Type: External NTC Thermistor
• Temperature Range: -40°C to +80°C (probe), -20°C to +60°C (device)
• Accuracy: ±0.5°C typical
• LoRaWAN: v1.0.3 Class A, backward compatible with v1.0.2
• Frequencies: EU868, US915, AU915, AS923, KR920, IN865, RU864
• Power: 2 x AAA LR03 batteries, up to 5 years life
• Memory: 1500 records
• Enclosure: ABS, IP52
• Microcontroller: STM32L072CZT6
• Transceiver: SX1276/SX1278
• Antenna: Internal
• Certifications: CE, FCC

Final note

For reliable remote temperature monitoring with flexible probe placement and long-term data logging, the DRAGINO LHT52 delivers enterprise-grade performance in a compact, energy-efficient package.