Dragino LSN50v2-D20 User Manual

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LSN50V2-D2x LoRaWAN Waterproof, Outdoor Temperature Sensor 1 / 23
LSN50v2-D20-D22-D23 LoRaWAN Temperature Sensor Manual
Document Version: 2.0.a
Image Version: v1.7.2
Version
Description
Date
1.0
Release
2020-Nov-10
1.1
Add power on info and jumper info.
2021-Feb-5
2.0
Add LSN50v2-D22, D23 models
2021-Aug-22
2.0.a
Modify Temperature sensor decription
2022-Mar-15

Dragino LSN50v2-D20 Specifications

General

Brand	Dragino
Model	LSN50v2-D20
Category	Accessories
Language	English

Summary

Introduction

1.1 What is LSN50v2-D2x LoRaWAN Temperature Sensor

Explains the Dragino LSN50v2-D2x as an IoT temperature sensor solution using LoRaWAN.

1.2 Specifications

Details common DC characteristics, LoRa specifications, and power consumption of the device.

1.3 Features

Lists key features including LoRaWAN compliance, power efficiency, probe support, and AT command usage.

1.4 Applications

Outlines various application areas such as security systems, building automation, and irrigation.

1.5 Hardware Variant

Details the different hardware variants of the LSN50v2 series, including probe configurations.

1.6 Pin Definitions and Switch

Details the pinout, jumper settings, boot mode, reset button, and LED behavior of the device.

1.7 Hardware Change log

Records historical changes made to the hardware of the LSN50v2-D20 model.

How to Use LSN50v2-D20

2.1 How it works?

Explains the device's operation as an OTAA Class A end node and its network joining process.

2.2 Quick Guide to Connect to LoRaWAN Server (OTAA)

Provides a step-by-step guide to connect the device to a LoRaWAN server like The Things Network (TTN).

2.3 Uplink Payload

Details the structure and analysis of the data payload transmitted by the device, including battery and temperature data.

2.4 Temperature Alarm Feature

Describes the device's workflow for setting and triggering temperature alarms based on thresholds.

2.5 Configure LSN50v2-D20

Explains device configuration using LoRaWAN downlink commands or AT commands for system and sensor settings.

2.6 LED Status

Details the meaning of the device's internal LED indicator states during boot, joining, and normal operation.

2.7 Button Function

Explains the function of the device's internal reset button for rebooting and initiating a new OTAA network join.

2.8 Firmware Change Log

Lists historical changes and updates made to the device firmware.

Battery & How to Replace

3.1 Battery Type

Describes the 8500mAH ER26500 Li-SOCI2 battery, its characteristics, and minimum working voltage.

3.2 Battery Replacement and Voltage Considerations

Details replacing the battery, voltage range, and managing voltage drop with diode D1.

3.3 Power Consumption and Battery Life Analysis

Explains power consumption analysis and battery life prediction using a calculator and notes.

Use AT Command

4.1 Access AT Command

Explains how to connect to the device using a USB to TTL adapter and AT commands for configuration.

FAQ

5.1 Frequency Range and Bands

Lists supported frequency ranges and recommended LoRaWAN bands for different LSN50v2-D20 models.

5.2 Frequency Plan Reference

Directs users to Dragino's documentation for End Device Frequency Plans.

5.3 Firmware Update Guide

Provides instructions and a link for updating the device firmware for bug fixes or new features.

Order Info

Packing Info

Support