IoT smart sensor

Instruction
ManualTemperature/humidity CO2 sensor
2way communication
Bidirectional communication between this product andthe application server allows for remote monitoring
and control.

LoRaWAN® compatible
Wide area real-time data collection with LoRaWAN®

maintenance-free
Powered by electricity generated from indoor lighting,no need to replace batteries

Supports labor saving
Supporting the reduction of manual work and effort.
Automated tasks minimize the involvement of workers.

Introduction
・・・・・・・・・・・ 1
Precautions
・・・・・・・・・・・ 2Part names
・・・・・・・・・・・ 2Product・・・・・・・・・・・ 3
Installation
・・・・・・・・・・・ 4
how to use
・・・・・・・・・・・ 5
Product・・・・・・・・・・・ 7
Maintenance・Storage ・・・・・・・・・ 10
Specification
・・・・・・・・・・・ 11
Inquiries regarding this product ・・・・ 11

ISS-THC-JA

Introduction
Thank you for purchasing our IoT smart sensor.
Please be sure to read the "Safety Precautions" before use.

Please be sure to observe
Safetyprecautions
This
manual and product contain important information regarding correct way to use theproduct in order to prevent harm to the user and damage to property.
■The following graphic symbols explain the contents to be observed. ( The following is an
example of the graphic symbol )This is something that must bedone. (do)CAUTION

This is something you
should not do. (don’t)Contents that may result in death or serious injury.

●Handling the main unit
Do not put metal or flammable objects inside the main unit or expose towater. Doing so may cause fire, electric shock, malfunction, etc.
●Impact on medical devices
The main body has a strong magnet.
Be sure toIt may affect medical devices such as cardiac pacemakers.
protect it
Please consider the installation process, location and handling.
●Installation and storage
Do not install it in a place where infants and children can reach it.

Ban●Avoid chemicals etc.
Do not apply volatile chemicals such as benzene or thinner, or pesticides tothe main unit.
●Putting it into equipment that may cause malfunctions.
Do not put in microwave oven or high pressure container.
●Do not modify the main unit or replace parts.
Failure to do so may cause malfunction or fire.

Do notdisassemble

NoteContents that may cause injury or property damage.

●Usage environment precautions
Do not install the main unit in locations where exposed to direct sunlight,
high temperatures, high mechanical vibrations, or strong magnetic fields.
Doing so may cause malfunction or fire.
Be sure toprotect it ●Do not place objects with high temperature directly under the main unit.
It may cause a fire.

BanNo water
allowed●Installation surface when using magnets
The metal surface which the magnet is attached may be unstabledepending on the material.
Please make sure it is flat and will not fall easily before use.
●Do not use in humid or dusty places or outdoors.
It may cause fire or malfunction.
This device does not have dustproof or waterproof functions.

- 1 -Precautions
Important●If the internal rechargeable battery is completely drain, it will take up to 5.5hours to charge with 500lx lighting.
●This product is for indoor use. Please avoid using it outdoors. We also recommend
avoiding locations exposed to direct sunlight and using the product under lightingof 5000 lx or less.
●When not in use, turn off the main switch and store away from direct sunlight.

Note・This product is for used in Japan only.
・This product cannot be used alone, a LoRaWAN® gateway is required.
・Communication may not be possible even within the communication area.Please checkthe location where this product can communicate before using it.
・This product is not designed to withstand various environments such as waterproof,dust resistance, and shock resistance.
・If installed next to other electronic devices, they may have a negative effect oneach other.
・Please contact us regarding disposal/recovery of this product.

Part names

Hanging HoleMain SwitchSelector SwitchLED
Place inside
the vent.

Wall Mounting
PlateSolar Panel- 2 -MagnetProductSummaryOverview
This product allows you to monitor CO2, temperature, and humidity
measurement information from a terminal device via a platform suchas a LoRaWAN® gateway or network server.
Additionally, since it supports bidirectional communication, various
settings (such as measurement intervals) can be made to thisproduct from the terminal device via the platform.
Communication environment/configuration
Application server

2way communication
Measurement information
Setting information

LoRaWAN

GatewayNetwork server

IoT smart sensor(ISS-THC-JA)(Terminal equipment)

Features① 2-way communication
・You can use it just by installing the sensor, and sensor settings(measurement interval, etc.) can be configured remotely from the application
server according to usage conditions.
② Maintenance free・Equipped with a solar panel that can generate electricity using indoor light,eliminating the need for battery replacement.
・Since there are no power supply restrictions, sensors can be installed freely.
③ Comply with the latest NDIR method CO2 sensor
・Comply with the NDIR method with calibration function recommended by theMinistry of Health, Labor and Welfare and the Ministry of Economy, Trade andIndustry.(NDIR：Non-Dispersive Infrared)④ Control of power consumption
・Adjust radio wave output depending on the distance between the sensor
and gateway to optimize power consumption.
⑤ Installation of highly efficient solar panels
・High power density and approximately twice the independent power
generation capacity compared to products made by other companies.
*According to our research- 3 -Installation
method*We arenot responsible for any fall or malfunction of this product due to installation.
[ Wall installation by fixing the wall plate with screws ]① Press the stopper on the wall-mounted plate to release the lock, and then slide the wall-mounted plate to remove it.
② Drill holes for fixing screws (M4) on the wall and secure the wall plate with the screws.
(Please prepare the screws yourself.)③ Insert the wall mounting plate into the recess on the back of the main unit and slide it until the stopper locks.

①②
Main Body

Construction Hole(M4)③Wall Mounting
Plate

Wall Mounting
Plate( Screw )Stopper

Stopper[ Installation using magnet ][ Attaching and removing the main body ]There is a built-in magnet inside the wall-mounted
plate, so wipe off any dust or dirt from the metal
installation surface and install it on a flat surface.

Attaching the main bodyInsert the main unit into the wall plate and slide
it until the stopper locks.
Main Bodywallsurface( Iron )Wall Mounting
Plate

Built-in Magnet
Stopper[ Installation by hanging ]Removing the main body

You can hang it on the wall by insert a wire throughthe hanging hole.

Push the stopper to release the lock and slide
the main unit.

Wire etc.

②①Hanging HoleStopper- 4 -how to use
Switch settings
You can change the transmission interval by setting the transmissioninterval setting switch. The default setting is AUTO ( 15 minutes ) .

note
Use a rounded object such as aballpoint pen to operate the switch.

Regardless of the switch settings, when the battery voltage drops according
to the battery alert setting (factory default 2.5V), the transmission interval
will be double automatically.
Meanwhile, if the battery voltage drops below 2.4V, it will quadruple the set
interval and transmit.

Boot① When the power switch is turned ON, the LED will blink.
When the LED turns OFF, the device will boot.

② When communication starts, a “join request” is sent to the LoRaWAN®
network server. If correctly approved by the network server,
the values of CO2 concentration, temperature, and humidity will be sent.
After that, it will send the measurements twice at 30-second intervals.
Then, the values of CO2 concentration, temperature, andhumidity will be transmitted at each transmission interval.
・This product must be registered on the LoRaWAN® network server inadvance. The information required for registration is provided in theinstruction manual included with the product.
・If the LED does not turn off during startup, the join request has not been
approved by the network server. The registration information of theproduct and the settings of the network server should be rechecked andretry. If the radio environment cause the interference, performing
the join request near the gateway may result in proper approval.

・If you need to turn the power switch back ON, please turn it off for atleast a minute before switching it ON again. If you switch it back ON
immediately after turning it off, the initial data transmission may not becarried out properly.

- 5 -Illuminance required for operation
A guideline for the required illuminance depending on the transmission interval.
Illuminance is required to enable continuous operation without decreasing
secondary battery voltage under each transmission interval condition.
Communicationinterval

500lx

400lx

300lx

200lx

130lx

15 Minutes

3.5h/Day

4.0h/Day

6.0h/Day

8.0h/Day

24h/Day* This is a guideline under normal temperature environment.

Charging performance
The lower limit of operable secondary battery voltage is 2.0V.
If the secondary battery becomes depleted and becomes inoperable, it canbe charged under the following conditions.
・When irradiating 500lx: With the switch in the "OFF" state, the starting
voltage (2.4V) is reached in about 5.5 hours.

Dark operation time
The estimated operating time in a completely dark place with no light isapproximately. Continuous operation for 7 days is possible when thesecondary voltage is 2.7V.
* The operating time will vary depending on the measurement intervalconditions and signal strength.

Data Retransmission Function
If the uplink failed, this product will temporarily stores the data andretransmits it once the uplink occurs.
This product can store up to 250 data entries, and during each uplink, it canretransmit up to 2 most recent data entries.

Automatic calibration function of CO2 sensor
The CO2 sensor of this product performs automatic calibration by assuming
the lowest CO2 concentration within a given measurement period as theatmospheric CO2 concentration.
Automatically calibrates the lowest value measured for 180 hours to 400ppm.
When using in an environment where the minimum CO2 concentration issignificantly different from the atmospheric CO2 concentration(approximately 400 ppm), you can turn off the automatic calibration function.
*The application server must support downlinks as it is configured using thedownlink command.

- 6 -ProductSpecifications
Transmission data format
1 , Uplink payload data structure
Byte

1

2 to 45 to 8

9

10,11

12,13

14,15

16

Data

Alert
information(refer to thefollowing )Settinginformation(refer to thefollowing )Timestamp(HEX)

Batteryvoltage(HEX)

Temperature(HEX)

Humidity(HEX)

CO2(HEX)

Firmwareversion (HEX)① Alert information
Bit76５４3210Flag

CO200:Normal 10:Upper limit alert 01:Lower limit alert 11:Error

Temperature 00:Normal 10:Upper limit alert 01:Lower limit alert 11:Error
Humidity00:Normal 10:Upper limit alert 01:Lower limit alert 11:Error

Battery voltage
00:Normal 10:Upper limit alert 01:Voltage drop 11:Lower limit alert② Setting information
Byte2
Bit

76５４3210Flag

Transmission interval setting0:Not executed 1:Command executed

CO2 automatic calibration function
CO2 calibration 0 : Not executed

0:Disabled 1:Enabled
1:Command executedTime setting 0 : Not executed

1:Command executed

Alert setting 0 : Not executed

1:Command executed

Factory setting 0 : Not executed

1:Command executed

System restart 0 : Not executed

1:Command executed

Transmission interval setting switch

Byte3
Bit

70:Manual 1:AutoByte4
6５Flag４3210Bit

76５４3210Flag

Transmission interval 0 to 1440 minutes (0 to 5A0h)
Charging status11:Fully charged 10:Charging(strong)
01: Charging(weak) 00: Discharge

Command execution error 1:Error
Time setting request

0:Set 1:Not set③ Time stamp
Convert the delay time value from the measurement point to transmission
into hexadecimal and place it in the payload (5th, 6th, 7th, 8th).
example 1) Current data delay time
Data transmission time: 05:22:01
Measurement time: 05:21:40
05:22:01 – 05:21:40 = 21 seconds → 0x00000015
example 2) Data delay time when retransmitting ( after 15 minutes)
Data transmission time: 05:37:01
Measurement time: 05:21:40
05:37:01 – 05:21:40 = 921 seconds → 0x00000399- 7 -④ Battery voltage
Multiply the battery voltage by 10, convert it to hexadecimal, and place itin the payload (9th).
example ) 2.7V → 27 ( 10x ) → 0x1B (hexadecimal conversion)⑤ Temperature
Multiply the temperature by 10, convert it to hexadecimal, and place it in thepayload (10th, 11th).
Temperatures below freezing are two's complement numbers.
*Temperatures below freezing are outside the product specification
temperature range.
example ) 29.8 ℃ → 298 ( 10x ) → 0x012A (hexadecimal conversion)-5.6 ℃ → -56 ( 10x ) → 0xFFC8 (hexadecimal conversion)⑥ Humidity
Multiply the humidity by 10, convert it to hexadecimal, and place it in the
payload (12th, 13th).
example ) 52.5%RH → 525 ( 10x ) → 0x020D (hexadecimal conversion)⑦ CO 2 concentration
Convert the CO2 concentration value to hexadecimal and place it in the
payload (14th, 15th).
example ) 450ppm → 0x01C2 (hexadecimal conversion)⑧ Firmware version
Multiply the firmware version by 10, convert it to hexadecimal, and place itin the payload (16th).
example ) Ver1.0 → 10 ( 10x ) → 0x0A (hexadecimal conversion)
2 , downlink command
Note: The application server must support downlink.

① Transmission interval setting
Byte

Data

1

2

3,4

５

6,70x49

Switching time 1
0 to 23:00( HEX )

Transmissioninterval 1
15 to 1440 minutes(HEX)

Switching time 2
0 to 23:00( HEX )

Transmissioninterval 2
15 to 1440 minutes(HEX)

Every 60 minutes from 11:00 PM to 5:00 AM, every 15 minutes from 5:00 AMto 11:00 PMexample ) Every 60 minutes from 11:00 PM to 5:00 AM , every 15 minutes
11PM → 23 → 0x17 Place it into the payload (2nd).
5AM → 5 → 0x05 Place it into the payload (5th).
60 minutes → 60 → 0x003C Place it into the payload (3rd,4th).
5 minutes → 5 → 0x0005 Place it into the payload (6th,7th).
Note: Please use this in conjunction with the time setting command.
② CO 2 calibration
Byte

12,3

Data

0x43

Calibration value
400 to 2000ppm (HEX)

Performs forced correction of CO2 sensor value.
example ) 450ppm → 450 → 0x01C2- 8 -③ Time setting
Byte

123Four

Data0x52Time(HEX)

Minutes(HEX)

Seconds(HEX)

Set the time on the instrument.
example ) 20:30:00 → 203000 → 0x14 0x1E 0x00
④ CO 2 alert setting
Byte

1

2

3,4

5,6

Data

0x410x00: Valid0x01: Invalid

Upper limit(HEX)

Lower limit(HEX)

Set the alert threshold forexample ) 450ppm → 450 → 0x01C2⑤ Temperature alert settings
Byte

12

3,4

5,6

Data

0x410x02: Valid0x03: Invalid

Upper limit(HEX)

Lower limit(HEX)

Set the temperature alert threshold.
example ) 26.8 ℃ → 268 ( 10x ) → 0x010C⑥ Humidity alert setting
Byte

123,45,6

Data0x410x04: Valid0x05: Invalid

Upper limit(HEX)

Lower limit(HEX)

Set the humidity alert threshold.
example ) 50.5%RH → 505 ( 10x ) → 0x01F9⑦ Battery alert settings
Byte

123４５

Data0x410x06: Valid0x07: Invalid

Upper limit(HEX)

Voltage drop(HEX)

Lower limit(HEX)

When a drop in battery voltage is detected, the transmission interval will
be doubled
Transmission will stop when the battery voltage detects a lower limit alert.
Set the battery alert threshold.
example ) 2.5V → 25 ( 10x ) → 0x19
⑧ CO2 sensor automatic calibration setting
Byte

1

2

Data0x4d

0x00: Invalid
0x01: Valid

Set the automatic calibration function of the CO2 sensor.

- 9 -⑨ System restart settings
Byte

1

Data

0x42

Restart the product.

⑩ Factory settings
Byte

1

Data0x46

RestoreFactory settings.

Transmission interval setting

15 minutes

CO2 alert settings

Invalid

Temperature alert settings

Invalid

Humidity alert settingsInvalid

Battery alert settings

Valid( Upper limit value 2.7V / Voltage drop
2.5V / Lower limit value 2.0V)

CO2 sensor automatic
calibration setting

ValidMaintenance
Periodically remove dust etc. from this product using the method below.
・Use a vacuum cleaner‘s crevice nozzle to suck up any dust that appears at thevents from the outside of this product.
note
・Do not use broom-type or brush-type nozzles.
The brush may get stuck inside this product and cause a malfunction.
・Do not blow away dust with a blower, etc.
Dust may get inside this product and cause it to malfunction.

・Wipe off any dirt that appear at the case surface with a dry, soft cloth.
note
・Never wash with water.
・Do not use detergents or chemicals.
・Do not wipe with disinfectant wipes containing alcohol.
It may cause a malfunction.

StoragemethodWhen notused the device, turn off the power, use the product's packaging box
or plastic bag, and store it in a place out of direct sunlight.
Note: Do not use non-static plastic bags.
Also, do not use adhesives or adhesive tape for sealing, etc.
It may affect the humidity sensor.

- 10 -Specification
Product nameMechanicalspecifications

ISS-THC-JA
Structure

Front: Equipped with low-light driven solar panel
Exterior case: Resin (PC-ABS)

Size

W76mm x D134mm x H23mm

Mass130g

Communication method

LoRaWAN® Mutual communication method

Compatible class

CLASS A

Communication Data rate
specifications

ADR

Activation method

OTAA method

Transmission power

20mW or less

Antenna

λ/4 Wavelength monopole antenna
Temperature: -10℃ ~ 40℃

Range

Humidity: 10 % RH to 90 % RH ( no condensation )CO2: 400-5000ppm
Temperature: ±0.2℃

Measurement

Accuracy *1

Humidity: ±1.8 %CO 2 : 30ppm+ 3% of reading (25℃)

IntervalMotion

Continuous Condition

Use
EnvironmentalCondition

Keep

15 minutes /30 minutes /60 minutes / Auto
(Auto: 15 minutes at factory shipment ) *2
By irradiating daylight white LED500Lx light for 3.5hours a day , it will last for 21.5 hours.
Continuous operation possible ( when measurement
interval is 15 minutes )Temperature: 0℃ ~ 40℃
Humidity: 10 % RH ~ 90 % RH ( no condensation )Temperature: 0℃ ~ 50℃
Humidity: 5 % RH ~ 90 % RH ( no condensation )Dustproof and waterproof
Protection class IP30 ( for indoor use) *3performance
EMC Standard

VCCI class B*1 Measurement errors will increase in environments with contaminants such as solvent vapor oradhesives that release gas.
*2 If the application server supports downlink, settings can be made in 1-minute increments between
15 minutes and 1440 minutes.
When the battery voltage drops, the transmission interval will be doubled (factory set at 2.5V)
and quadrupled at 2.4V depending on the voltage drop value in the battery alert settings.
*3 It is not dust-proof and drip-proof.

Inquiries regarding this productHead Office : 3140-1 Shimosuwa-machi, Suwa-gun, Nagano 393-8555
E-mail : sales@iriichi.co.jp
URL: www.iriichi.co.jp
Reception hours 9 : 00-12:00 , 13: 00-17 :00( Excluding Saturdays, Sundays, holidays, and company holidays)
・Specifications and appearance are subject to change in order to improve the product.
・LoRaWAN® is a mark used under license from LoRa Alliance®.
GK3-10600-002 Rev1.2- 11 -