image-20240905135235-4.png

Table of Contents:

Data URI image

1.  Introduction

1.1 ​ What is LTC2-LB LoRaWAN Temperature Transmitter

The Dragino LTC2-LB Industrial LoRaWAN Temperature Transmitter is designed to monitor temperature for different environment. It supports to read PT100 probe and convert the value to temperature and uplink to IoT server via LoRaWAN protocol.

LTC2-LB supports Datalog feature. User can retrieve the sensor value via LoRaWAN downlink command.

LTC2-LB has two internal 24-bit ADC interfaces.

LTC2-LB supports BLE configure and wireless OTA update which make user easy to use.

LTC2-LB is powered by 8500mAh Li-SOCI2 batteryit is designed for long-term use up to several years.

Each LTC2-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto-connect after power on.

​1.2  Features

  • LoRaWAN v1.0.3 Class A
  • max: 2 x monitor temperature channels
  • Support 3 -wire PT-100
  • Temperature alarm
  • Datalog Feature
  • Support Bluetooth v5.1 and LoRaWAN remote configure
  • Support wireless OTA update firmware
  • Uplink on periodically
  • Downlink to change configure
  • 8500mAh Li/SOCl2 Battery

 

1.3 Specification

Common DC Characteristics:

  • Supply Voltage: Built-in Battery , 2.5v ~ 3.6v
  • Operating Temperature: -40 ~ 85°C

LoRa Spec:

  • Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz
  • Max +22 dBm constant RF output vs.
  • RX sensitivity: down to -139 dBm.
  • Excellent blocking immunity

Battery:

  • Li/SOCI2 un-chargeable battery
  • Capacity: 8500mAh
  • Self-Discharge: <1% / Year @ 25°C
  • Max continuously current: 130mA
  • Max boost current: 2A, 1 second

Power Consumption

  • Sleep Mode: 5uA @ 3.3v
  • LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

1.4 ​ Applications

  • Logistics and Supply Chain Management
  • Food management
  • Cold chains solution
  • Industrial Monitoring and Control

1.5 Sleep mode and working mode

Deep Sleep Mode: Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.

Working Mode: In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.

1.6 Button & LEDs

1675071855856-879.png

Behavior on ACTFunctionAction
Pressing ACT between 1s < time < 3sSend an uplink

If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, blue led will blink once.
Meanwhile, BLE module will be active and user can connect via BLE to configure device.

Pressing ACT for more than 3sActive Device

Green led will fast blink 5 times, device will enter OTA mode for 3 seconds. And then start to JOIN LoRaWAN network.
Green led will solidly turn on for 5 seconds after joined in network.
Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.

Fast press ACT 5 times.Deactivate DeviceRed led will solid on for 5 seconds. Means LTC2-LB is in Deep Sleep Mode.

1.7 BLE connection

LTC2-LB supports BLE remote configure.

BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:

  • Press button to send an uplink
  • Press button to active device.
  • Device Power on or reset.

If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.

1.8 Pin Definitions

image-20240924112455-2.png

1.9 Mechanical

image-20240924112107-1.png

1.10  Probe Variant

LTC2-LB provide default probe version. See below for the variant:

Model

Photo

Description

DR-SI 

image-20240905135914-8.png

Standard IP68 Probe Version:

  • LTC2-LB with 1 x Standard IP68 PT100 probe.
  • Installation: Insert
  • Cable Length : 2m
  • PT100 Class : Class A
  • Probe Dimension: φ5*30mm
  • Measure Range: -60 ~ 200 °C
  • Suitable Environment: General environment

DR-LT

image-20240905140414-9.png

Low Temperature Version:

  • LTC2-LB with 1 x Low Temperature PT100 probe.
  • Installation: Insert
  • Cable Length : 2m
  • PT100 Class : Class A
  • Probe Dimension: φ5*30mm
  • Measure Range: -196 ~ 150 °C
  • Suitable Environment: Low temperature measurement, such as COVID vaccine transport
DR-HT

image-20240905140957-12.png

High Temperature Version:

  • LTC2-LB with 1 x high temperature PT100 probe.
  • Installation: Insert
  • Cable Length : 3m
  • PT100 Class : Class A
  • Probe Dimension: φ4.5*30mm
  • Measure Range: -70 ~ 450 °C
  • Suitable Environment: High Temperature
DR-FSA

image-20240905140643-10.png

Food Safety Version:

  • LTC2-LB with 1 x Food Safety PT100 probe. Installation: Insert
  • Cable Length : 2m
  • PT100 Class : Class A
  • Probe Dimension: φ4*150mm
  • Measure Range: -40 ~ 260 °C
  • Suitable Environment: Food temperature measurement

DR-FT

image-20240905140832-11.png

Flat Type Version:

  • LTC2-LB with 1 x Flat Type PT100 probe.
  • Installation: Attached
  • Cable Length : 2m
  • PT100 Class : Class A
  • Probe Dimension: 3.6*7.5*20mm
  • Measure Range: -60 ~ 200 °C
  • Suitable Environment: Attached to the measure point.

2.  How to use LTC2-LB?

2.1  How it works?

 

The LTC2-LB is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the LTC2-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

On each uplink, LTC2-LB will check its two ADC Interfaces and get the temperature from the sensor and send out to server.

2.2 ​Quick guide to connect to LoRaWAN server (OTAA)

Following is an example for how to join the TTN v3 LoRaWAN Network. Below is the network structure; we use the LPS8v2  as a LoRaWAN gateway in this example. 

The LPS8V2 is already set to connected to TTN network , so what we need to now is configure the TTN server.

image-20240905150538-1.png

Step 1: Create a device in TTN with the OTAA keys from LTC2-LB.

Each LTC2-LB is shipped with a sticker with the default device EUI as below:

image-20230426083905-2.png

You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:

Create the application.

image-20240907111048-1.png

image-20240907111305-2.png

Add devices to the created Application.

image-20240907111659-3.png

image-20240907111820-5.png

Enter end device specifics manually.

image-20240907112136-6.png

Add DevEUI and AppKey.

Customize a platform ID for the device.

image-20240907112427-7.png

Step 2: Add decoder

In TTN, user can add a custom payload so it shows friendly reading.

Click this link to get the decoder: https://github.com/dragino/dragino-end-node-decoder/tree/main/

Below is TTN screen shot:

image-20240907113746-8.png

image-20240907115849-10.png

Step 3: Activate on LTC2-LB

Press the button for 5 seconds to activate the LTC2-LB.

Green led will fast blink 5 times, device will enter OTA mode for 3 seconds. And then start to JOIN LoRaWAN network. Green led will solidly turn on for 5 seconds after joined in network.

After join success, it will start to upload messages to TTN and you can see the messages in the panel.

2.3  ​Uplink Payload

2.3.1 Device Status, FPORT=5

Users can use the downlink command(0x26 01) to ask LTC2-LB to send device configure detail, include device configure status. LTC2-LB will uplink a payload via FPort=5 to server.

The Payload format is as below.

Device Status (FPORT=5)
Size (bytes)12112
ValueSensor ModelFirmware VersionFrequency BandSub-bandBAT

Example in TTN: 

image-20240907151051-11.png

Sensor Model: For LTC2-LB, this value is 0x3D

Firmware Version: 0x0100, Means: v1.0.0 version

Frequency Band:

0x01: EU868

0x02: US915

0x03: IN865

0x04: AU915

0x05: KZ865

0x06: RU864

0x07: AS923

0x08: AS923-1

0x09: AS923-2

0x0a: AS923-3

0x0b: CN470

0x0c: EU433

0x0d: KR920

0x0e: MA869

Sub-Band:

AU915 and US915:value 0x00 ~ 0x08

CN470: value 0x0B ~ 0x0C

Other Bands: Always 0x00

Battery Info:

Check the battery voltage.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

2.3.2  Sensor Data. FPORT=2

Below is the uplink payload which shows.

Size(bytes)

21224
Value

BAT

Interrupt flag & Interrupt Level & TEMP1H flag & TEMP1L flag&TEMP2H flag&TEMP1L flag

Channel1

temperature

Channel2

temperature

Unix TimeStamp

 

Data URI image

Example in TTN: 

image-20240907151447-12.png

Battery

Sensor Battery Level.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

Interrupt flag & Interrupt Level & TEMP1H flag & TEMP1L flag& TEMP2H flag & TEMP2L flag

Interrupt flag & Interrupt Level:

This data field shows if this packet is generated by interrupt or not. 

Note: The Interrupt Pin refers to the GPIO_EXTI pin in the screw terminal. 

Example:

If byte[2]&0x01=0x00 : Normal uplink packet.

If byte[2]&0x01=0x01 : Interrupt Uplink Packet.

If byte[2]&0x02>>1=0x00 : Interrupt pin low level.

If byte[2]&0x02>>1=0x01 : Interrupt pin high level.

TEMP1H flag & TEMP1L flag&TEMP2H flag & TEMP2L flag:

Temperature alarm flag.

Turn on the alarm mode, the TEMP1L fag flag is True when the channel1 temperature is below the set minimum value, otherwise it is False.

And the TEMP1H fag flag is True when the channel1 temperature is higher than the set maximum value, and False otherwise.

Turn on the alarm mode, the TEMP2L fag flag is True when the channel2 temperature is below the set minimum value, otherwise it is False.

And the TEMP2H fag flag is True when the channel2 temperature is higher than the set maximum value, and False otherwise.

 

Channel 1 temperature

Example:

If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree

If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.

(FF3F & 8000:Judge whether the highest bit is 1, when the highest bit is 1, it is negative)

If the value is -327.6, it means the channel1 PT100 probe is not connected.

If the value is -983, it means the PT100 converter is not connected.

Channel 2 temperature

Example:

If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree

If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.

(FF3F & 8000:Judge whether the highest bit is 1, when the highest bit is 1, it is negative)

If the value is -327.6, it means the channel2 PT100 probe is not connected.

If the value is -983, it means the PT100 converter is not connected.

Data URI imageData URI imageData URI imageData URI image

2.5  Datalog Feature

LTC2-LB will auto get the time from LoRaWAN server during Join, and each uplink will then include a timestamp. When user want to retrieve sensor value, user can send a poll command from the IoT platform to ask sensor to send value in the required time slot.

2.5.1  Unix TimeStamp

LTC2-LB uses Unix TimeStamp format based on

1655694312268-590.png

Users can get this time from the link:  https://www.epochconverter.com/ :

Below is the converter example

1655694332878-202.png

So, we can use AT+TIMESTAMP=1725693900 or downlink 3066DBFFCC00 to set current time : 2024-September-7 Saturday 07:25:00

2.5.2  Set Device Time

There are two ways to set the device's time:

1. Through LoRaWAN MAC Command (Default settings)

Users need to set SYNCMOD=1 to enable sync time via the MAC command.

Once LTC2-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and server will reply with (DeviceTimeAns) to send the current time to LTC2-LB. If LTC2-LB fails to get the time from server, LTC2-LB will use the internal time and wait for next time request (AT+SYNCTDC to set time request period, default is 10 days).

 

Note: LoRaWAN Server needs to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN v3 and loriot support but TTN v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN v2 if SYNCMOD=1.

 

2. Manually Set Time

Users need to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.

2.5.3  Poll sensor value

Users can poll sensor values based on timestamps. Below is the downlink command.

Downlink Command to poll Open/Close status (0x31)
1byte4bytes4bytes1byte
31Timestamp startTimestamp endUplink Interval

 

Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.

For example, downlink command image-20240907154739-16.png

Is to check 2024-09-07 15:25:00 to 2024-09-07 15:30:00's data

Uplink Internal =10s,means LTC2-LB will send one packet every 10s. range 5~255s.

2.5.4  Datalog Uplink payload

When server senser a datalog polling to LTC2-LB, LTC2-LB will reply with one or more uplink messages as reply. Each uplink message includes multiply data entries value. Each entry has the same payload format as normal uplink payload.

Note:

  • Poll Message Flag is set to 1.
  • Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.

For example, in US915 band, the max payload for different DR is:

  1. DR0: max is 11 bytes so one entry of data
  2. DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
  3. DR2: total payload includes 11 entries of data
  4. DR3: total payload includes 22 entries of data.

If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0    

Example:

If LTC2-LB has below data inside Flash:

Flash AddUnix TimeExtBAT voltageValue
8021630systime= 2021/5/16 01:17:4413684temp1=24.7 temp2=25.2
8021640systime= 2021/5/16 01:37:4413681temp1=24.7 temp2=25.2
8021650systime= 2021/5/16 01:57:4413681temp1=24.7 temp2=25.1
8021660systime= 2021/5/16 02:17:4413684temp1=24.7 temp2=25.0
8021670systime= 2021/5/16 02:37:4413684temp1=24.6 temp2=25.0
8021680systime= 2021/5/16 02:57:4413684temp1=24.6 temp2=25.1
8021690systime= 2021/5/16 03:17:4413684temp1=24.5 temp2=25.0
80216A0systime= 2021/5/16 03:37:4413684temp1=24.5 temp2=25.0
80216B0systime= 2021/5/16 03:57:4413684temp1=24.4 temp2=25.0

If user send below downlink command: 3166DBFFCC66DC00F80A

Where : Start time: 66DBFFCC = time 2024/9/7 15:25:00

              Stop time: 66DC00F8 = time 2024/9/7 15:30:00

LTC2-LB will uplink this payload.

image-20240907161952-18.png 

000000F700FC4266DBFFD0 000000F700FC4266DC000C 000000F700FB4266DC0048 000000F700FB4266DC0084 000000F800FC4266DC00C0

Where the first 11 bytes is for the first entry:

0000 00F7 00FC 42 66DBFFD0

0x0000: The first two bytes are reserved positions and have no meaning.

0x00F7: Channel 1 temp=0x00F7/10=24.7℃

0x00FC: Channel 2 temp=0x0FC/10=25.2℃

0x42: Interrupt flag & Interrupt Level:       

  • If payload & 0x02 = 0x02  --> The interrupt Level is "High";
  • If payload & 0x02 = 0x00  --> The interrupt Level is "Low";
  • If payload & 0x01 = 0x01  --> The interrupt flag is "Ture";
  • If payload & 0x01 = 0x00  --> The interrupt flag is "False";

 0x66DBFFD0: System timestamp=0x66DBFFD0=1725693904(UTC)

3.  Configure LTC2-LB via AT Command or LoRaWAN Downlink

Use can configure LTC2-LB via AT Command or LoRaWAN Downlink.

 

There are two kinds of commands to configure LTC2-LB, they are:

 General Commands.

These commands are to configure:

  • General system settings like: uplink interval.

  • LoRaWAN protocol & radio related command.

They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: End Device AT Commands and Downlink Command

Commands special design for LTC2-LB

These commands only valid for LTC2-LB, as below:

Data URI imageData URI image

3.1  Set Transmit Interval Time

Feature: Change LoRaWAN End Node Transmit Interval.

AT Command: AT+TDC

Command ExampleFunctionResponse
AT+TDC=?Show current transmit Interval

1200000(Default value)
OK
the interval is 1200000ms=1200s

AT+TDC=600000Set Transmit Interval

OK
Set transmit interval to 600000ms=600 seconds

Downlink Command: 0x01

Format: Command Code (0x01) followed by 3 bytes time value.

If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

  • Example 1: Downlink Payload: 0100001E           //  Set Transmit Interval (TDC) = 30 seconds
  • Example 2: Downlink Payload: 0100003C          //  Set Transmit Interval (TDC) = 60 seconds

3.2  Set alarm mode

Feature: Enable/Disable Alarm Mode.

AT Command: AT+WMOD

  • AT+WMOD=0    //Disable the alarm mode, default.
  • AT+WMOD=1    //Enable the alarm mode.

Downlink Command: 0xA5

  • Downlink payload: 0xA500         //Same as AT+WMOD=0
  • Downlink payload: 0xA501         //Same as AT+WMOD=1

3.3  Alarm check time

Feature: The time interval to check sensor value for Alarm. ( Default: AT+CITEMP=1; Unit: minute )

AT Command: AT+CITEMP

Example: 

  • AT+CITEMP=10     //Set collection interval in 10 min, only in alarm mode.

Downlink Command: 0xA6

Format: Command Code (0xA6) followed by 2 bytes.

Example:

  • Downlink payload: 0xA6000A     //Same as AT+CITEMP=10

3.4  Set Alarm Threshold

Feature: Set Alarm Threshold. (Unit: ℃)

AT Command: AT+ARTEMP

The first parameter sets the low limit of channel 1, and the second parameter sets the high limit of channel 1.

The third parameter sets the low limit for channel 2, and the fourth parameter sets the high limit for channel 2.

Example:

  • AT+ARTEMP=-200,800,-200,800    //Channel 1 & Channel 2 operating temp: -200℃~800℃,alarm when out of range.
  • AT+ARTEMP=10,100,10,101           //Channel 1 operating temp: 10℃~100℃; Channel 2 operating temp: 10℃~101℃, alarm when out of range.

Downlink Command: 0xA7

Format: Command Code (0xA7) followed by 8 bytes.

Each two bytes after the function code 0xA7 is a parameter, corresponding to the four parameters of AT+ARTEMP in sequence.

Example:

  • Downlink payload: 0xA7FF380320FF380320    //Same as AT+ARTEMP=-200,800,-200,800
  • Downlink payload: 0xA7000A0064000A0065   //Same as AT+ARTEMP=10,100,10,101   

Note: For negative temperature -200℃: 65536-200= 65336(D) = 0XFF38(H)

3.5  Print data entries base on page

Feature: Print the sector data from start page to stop page (max is 400 pages).

AT Command: AT+PDTA

Command ExampleResponse

 

AT+PDTA=259,260

Print page 259 to 260

 

Stop Tx events when read sensor data

8021600 systime= 2021/5/16 00:17:44 1 3684 temp1=28.7 temp2=28.5

8021610 systime= 2021/5/16 00:37:44 1 3685 temp1=28.7 temp2=28.4

8021620 systime= 2021/5/16 00:57:44 1 3684 temp1=28.8 temp2=28.4

8021630 systime= 2021/5/16 01:17:44 1 3684 temp1=28.8 temp2=28.4

8021640 systime= 2021/5/16 01:37:44 1 3681 temp1=28.7 temp2=28.4

8021650 systime= 2021/5/16 01:57:44 1 3681 temp1=28.6 temp2=28.4

8021660 systime= 2021/5/16 02:17:44 1 3684 temp1=28.6 temp2=28.4

8021670 systime= 2021/5/16 02:37:44 1 3684 temp1=28.5 temp2=28.4

8021680 systime= 2021/5/16 02:57:44 1 3684 temp1=28.5 temp2=28.4

8021690 systime= 2021/5/16 03:17:44 1 3684 temp1=28.5 temp2=28.4

80216A0 systime= 2021/5/16 03:37:44 1 3684 temp1=28.5 temp2=28.4

80216B0 systime= 2021/5/16 03:57:44 1 3684 temp1=28.4 temp2=28.4

80216C0 systime= 2021/5/16 04:17:44 1 3684 temp1=28.4 temp2=28.4

80216D0 systime= 2021/5/16 04:37:44 1 3683 temp1=28.3 temp2=28.4

80216E0 systime= 2021/5/16 04:57:44 1 3684 temp1=28.3 temp2=28.4

80216F0 systime= 2021/5/16 05:17:44 1 3685 temp1=28.3 temp2=28.4

Start Tx events

OK

Downlink Command:

No downlink commands for feature

3.6  Print last few data entries

Feature: Print the last few data entries

AT Command: AT+PLDTA

Command ExampleResponse

AT+PLDTA=5

Print last 5 entries

Stop Tx events when read sensor data

1 systime= 2021/5/17 03:12:37 1 3681

temp1=26.0 temp2=26.1

2 systime= 2021/5/17 03:17:37 1 3682

temp1=26.0 temp2=26.1

3 systime= 2021/5/17 03:22:37 1 3687

temp1=25.9 temp2=26.1

4 systime= 2021/5/17 03:27:37 1 3684

temp1=25.9 temp2=26.1

5 systime= 2021/5/17 03:32:37 1 3684

temp1=26.2 temp2=26.1

Start Tx events

OK

Downlink Command:

No downlink commands for feature

3.7  Clear Flash Record

Feature: Clear flash storage for data log feature.

AT Command: AT+CLRDTA

Command ExampleFunctionResponse
AT+CLRDTAClear date record

Clear all stored sensor data…
OK

Downlink Command: 0xA3

  • Example: 0xA301     //  Same as AT+CLRDTA

4.  Battery & Power Consumption

LTC2-LB uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.

Battery Info & Power Consumption Analyze .

5. OTA Firmware update

User can change firmware LTC2-LB to:

  • Change Frequency band/ region.
  • Update with new features.
  • Fix bugs. 

Firmware and changelog can be downloaded from : Firmware download link

Methods to Update Firmware:

 

6.  FAQ

6.1  How to use AT Command to configure LTC2-LB

LTC2-LB supports AT Command set. User can use a USB to TTL adapter plus the Program Cable to connect to LTC2-LB for using AT command, as below.

Connection:

  • USB to TTL GND <-->  LTC2-LB GND
  • USB to TTL RXD  <-->  LTC2-LB TXD
  • USB to TTL TXD  <-->  LTC2-LB RXD

In PC, User needs to set serial tool(such as putty, SecureCRT) baud rate to 9600 to access to access serial console for LTC2-LB. The AT commands are disable by default and need to enter password (default password is the AT+PIN on the box label)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again.

Input password and ATZ to activate LTC2-LB,As shown below:

image-20240907172040-19.png

7.  Trouble Shooting

7.1  AT Command input doesn't work

In the case if user can see the console output but can't type input to the device. Please check if you already include the ENTER while sending out the command. Some serial tool doesn't send ENTER while press the send key, user need to add ENTER in their string. 

8.  Order Info

Notice: This part number doesn't include the Temperature sensor. Users need to purchase separately.

Part Number : LTC2-LB-XX

XXThe default frequency band

  • AS923 : LoRaWAN AS923 band
  • AU915 : LoRaWAN AU915 band
  • EU433 : LoRaWAN EU433 band
  • EU868 : LoRaWAN EU868 band
  • KR920 : LoRaWAN KR920 band
  • US915 : LoRaWAN US915 band
  • IN865 :  LoRaWAN IN865 band
  • CN470 : LoRaWAN CN470 band

Probe Options: DR-SIDR-LTDR-HTDR-FSADR-FT

9. ​ Packing Info

Package Includes:

  • LTC2-LB LoRaWAN Temperature Transmitter x 1

Dimension and weight:

  • Device Size: cm
  • Device Weight: g
  • Package Size / pcs : cm
  • Weight / pcs : g

10.  ​Support

  • Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
  • Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to support@dragino.com.
Tags:
    
Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0