Dragino LHT52 : capteur de température et d’humidité intérieur LoRaWAN

Description

The Dragino LHT52 is a ready-to-use, multifunction LoRaWAN sensor for reliable measurement of température andRelative humidity in an indoor environment. Compact, battery-powered and easy to integrate into a home automation system based on a Raspberry Pi, it is perfect for creating a comfortable, smart controlled home.

Main features and versatility

• It combines a température sensor and a Relative humidity integrated.
• These measurements are transmitted via LoRaWAN (version 1.0.3, class A), ensuring low power consumption and long range.
• Option to connect an external temperature probe (via Type-C port), for remote measurement or measurement inside another material.

Long battery life

• Runs on 2 AAA batteries, which are easy to replace.
• Battery life of up to several years, depending on transmission frequency.
• Very low standby consumption (~5 µA), with reasonable peaks (<110 mA) during transmission.

Data logging and smart alarms

• Features internal memory (datalogging) to store readings in the event of network loss, with the option to retrieve them later on request.
• Includes a Temperature alarm : if a threshold is exceeded, it sends an alert immediately without waiting for the next transmission cycle.

Dynamic configuration

• Remote configuration via AT commands or via LoRaWAN downlink : change the transmission interval, enable the alarm, set the temperature range, etc.
• Supports remote firmware updates (OTA), keeping the device up to date without physical handling.

Home automation with Raspberry Pi

By combining the sensor with a LoRaWAN gateway controlled by a Raspberry Pi, you can:

• View temperature and humidity values in real time via Home Assistant or Node-RED.
• Set up automations: trigger a fan, a ventilation system or an alarm if the humidity level exceeds a threshold.
• Send instant notifications (mobile, email, sound, light).
• Keep a data history to analyze trends and optimize comfort and energy consumption.

Installation and ergonomics

• Discreet wall-mounted or desktop format, ideal for a living room, a bedroom or a technical room.
• Built-in LED shows the operating status (network, transmission, alarm).
• Simple installation with a wall mount or freestanding; no external power supply required.

Long-term confidence and reliability

• Compatible with many LoRaWAN networks (EU868, US915 regions, etc.).
• Versatile enough to meet the needs of indoor comfort, food storage or technical monitoring.
• Runs uninterrupted for years, with no need for frequent intervention.

Conclusion

The Dragino LHT52 is an excellent choice for equipping a smart home with accurate, self-powered environmental measurements. Paired with a Raspberry Pi, it becomes a central element of a smart home automation strategy: sensor, alarm and automated dashboard, all with minimal wiring and maximum convenience.