With the LHT52, you gain reliable monitoring of temperature 🌡️ and humidity 💧, seamlessly delivered via LoRaWAN long‑range wireless 📡. Perfect for IoT deployments, it supports applications in food service 🍕, energy metering ⚡, urban smart city projects 🏙️, and automated building management 🏢. ✨ Features ✅ Wide Measuring Range: Measures air temperature from -20 ~ 50°C and humidity from 0 ~ 99.0 %RH (non-condensing). 🔋 Low-power consumption: Powered by 2 x AAA LR03 batteries, providing a long battery life of up to 2 years. 📡 Long-range data transmission: Data can be transmitted reliably within a range of 3~5 kilometers. 🌐 Support for multiple platforms: Quick integration with major LoRaWAN networks like Helium and The Things Network (TTN). 🔌 Optional external probe: Supports external sensors, such as the DS18B20 for surface temperature detection. 📊 Data retrievability: Internal memory allows for the extraction of up to 178 historical data items via downlink commands. 🚨 Alarm Function: Set custom thresholds to receive immediate notifications when conditions go out of range. ⚙️ Flexible parameter configuration: Supports AT commands and remote configuration through LoRaWAN Downlink. 📝 Description The LHT52 is a compact LoRaWAN sensor designed to gather environmental data and transmit it over long distances using the LoRaWAN v1.0.3 protocol. It is fully compatible with standard LoRaWAN gateways, including SenseCAP M1 (Helium) and TTN hotspots. To prevent data loss, it features Datalog capability. Every transmission is recorded locally, allowing you to retrieve historical values using downlink commands if a network interruption occurs. Each device comes with unique OTAA keys for secure network joining. The default reporting interval is 20 minutes, but this can be customized. With the Alarm Mode enabled, the sensor will bypass the interval and send an immediate uplink if temperature or humidity levels exceed your predefined safety thresholds. 💡 Note The LHT52 is primarily designed for indoor environment monitoring. For industrial or outdoor requirements, we recommend the SenseCAP S2101, which features an IP66 rugged case, works from -40℃ to 80℃, and includes a built-in 19Ah battery for up to 10 years of use. 📑 Specifications Category Details Air Temperature – Range ‑20 ~ 50 °C Air Temperature – Resolution 0.01 °C Air Temperature – Accuracy Typ ±3 °C Air Temperature – Long Term Drift Air Humidity – Range 0 ~ 99.0 %RH (No Dew) Air Humidity – Resolution 0.1 %RH Air Humidity – Accuracy Typ ±3 %RH Air Humidity – Long Term Drift LoRaWAN Protocol V1.0.3 Class A Battery 2 × AAA LR03 (not included) IP Rating IP52 Current Idle: 5 µA, Transmit: max 110 mA Storage & Operation Temperature ‑20 °C ~ +50 °C External Temperature Probe Default package not included (purchase via [email protected]) Probe Name AS‑01 based on DS18B20 Probe Accuracy Range ±0.5 °C (‑10 °C ~ +85 °C); ±2 °C (‑55 °C ~ +125 °C) Probe Resolution 0.0625 °C Probe Operation Temperature ‑55 °C ~ +125 °C Probe Cable Length 2 m 🌍 Applications 🖼️ Museums & Galleries: Maintain precise humidity (45%) and temperature (65°F-68°F) to preserve antiques and art. 🏠 Basements & Garages: Monitor sensitive storage areas to prevent mold or heat damage. 🌿 Greenhouses: Track ideal growing conditions (typically 26.5 – 29.5°C). 🏫 Schools & Offices: Ensure occupant comfort by keeping humidity below 60% and temperatures between 70°F and 78°F. 📏 Dimensions 📦 Part List LHT52 Sensor 1 Double Coated Tissue Tape 2 📂 Documents 📄 LHT52 LoRaWAN Temperature and Humidity Sensor -Datasheet 📘 LHT52 LoRaWAN Temperature and Humidity Sensor -User Manual Certification HSCODE 9025800090 USHSCODE 9025900600 UPC COO CHINA
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