DRAGINO - Solar-powered 3-probe LoRaWan waterproof temperature sensor

Dragino D23-LS - LoRaWAN Temperature Sensor

The Dragino D23-LS is a temperature sensor designed for Internet of Things (IoT) solutions using LoRaWAN technology. It converts temperature measurements into wireless data and transmits them via a LoRaWAN gateway to an IoT platform.

Thanks to LoRa technology, the device offers extremely long range at low data rates, excellent immunity to interference and very low power consumption.

The sensor measures temperatures between -55°C and +125°C with an accuracy of ±0.5°C (max ±2.0°C). It features a configurable temperature alarm function for immediate notification. In the event of network loss, the D23LS stores data locally and sends them out as soon as the connection is re-established. Configuration is possible via Bluetooth 5.1, and firmware updates are carried out wirelessly (OTA). Power is supplied by an 8500mAh Li-SOCI2 battery or a solar panel with a 3000mAh Li-ion battery, for an autonomy of up to 5 years.

Main functions

• LoRaWAN 1.0 protocol.3 Class A
• Ultra-low power consumption 3
• DS18B20 temperature sensors
• Measurement range: -55°C to +125°C
• Configurable temperature alarm
• Datalog function for off-grid data backup
• Bluetooth 5.1 support for local configuration
• Wireless firmware update (OTA)
• Periodic data transmission (uplink)
• Receipt of configuration commands (downlink)
• IP66 waterproof housing
• Preloaded LoRaWAN keys for automatic connection

Technical data

• Supply voltage: built-in battery 2.5 V to 3.6 V
• Operating temperature :
• -40°C to 85°C
• Measurement range: -55°C to +125°C
• Accuracy: ±0.5°C (max ±2.0°C)
• Frequency: 862 to 1020 MHz (Band 1 HF)
• Maximum RF power: +22 dBm (constant)
• RX sensitivity: down to -139 dBm
• Excellent immunity to interference
• Battery :
• Non-rechargeable Li-SOCI2

• • Capacity: 8500mAh

• Self-discharge: <1% per year at 25°C
• Max continuous current: 130mA
• Max boost current: 2A for 1 second
• Sleep mode: 5 µA @ 3.3 V
• LoRa transmission mode: 125 mA @ 20 dBm / 82 mA @ 14 dBm