LANSITEC Information Technology 100 00193 User Manual

Temperature and Humidity LoRaWAN Sensor

Product Part Number: 100-00053

Document Number: 990-00104

Rev. 0.33 12/2017

contact@lansitec.com

General Description

Lansitec temperature and humidity sensor is based on the

advanced LoRa modulation and powered by lithium battery

with 5-year operation time. It offers cost effective LoRaWAN

end device for a variety of application. It’s IP64 enclosure and

long operation time offers low maintenance and is ideal for

outdoor use. Sensor work mode can be adjusted via LoRa

network.

Lansitec sensors family is fully compatible and

plug & play for LoRaWAN network operation.

Applications

 Weather station

 Heating

 Drying

 Ventilation & air conditioning systems

 Smart Agriculture

 Building automation

Key features

 Powered by lithium thionyl chloride battery: 5 years of

operation for 1 uplink 2 minutes.

 Extended industrial operating temperature:  -40

Cto+85°C.

 Outdoor use: IP64 enclosure.

 Accuracy:

 ±5% RH typically from 20% RH to 80% RH at 25°C.

 ±0.3°C typically from +5°C to +60°C.

 LoRaWAN compatible:

Class A, uplink rate programmable from 10 seconds to 24 hours.

 Change uplink cycle via wireless, configurable by server via

downlink command

 Operating frequency bands (Option at order):

 900MHz, < 25mW radiated power

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Temperature and Humidity LoRaWAN Sensor

1. Product specifications

The tables below give the electrical specifications and performance of the temperature and humidity

measurement.

Table 1 General electrical characteristic

ITEMs Parameter Specifications Unit

Structure Size 84X114X55 mm

Electrical

Characteristics

Operating Range Temperature -40 to 85

power supply 3.6V battery V

Sleep current 5uA uA

Transmit current 120mA@17dBm set mA

45mA@14dBm set mA

Uplink cycle 10 minutes in default minutes

Set by downlink command from server

Battery life More than 5 years with 5minute s cycle years

More than 10 years with 10minutes cycle years

℃

Humidity 0 to 100 %RH

Table 2 Temperature measurement performance

Parameter Condition Min Typ. Max Units Resolution 14bit 0.01 °C

Accuracy Typ. +/-0.3 Operating Range Extended -40 85 °C

Long Term Drift Normal <0.04 °C

Table 3 Humidity measurement performance

Parameter Condition Min Typ. Max Units Resolution 12bit 0.04 %RH Accuracy Typ. +/-3.0 %RH Nonlinearity <0.1 %RH

Operating Range Extended 0 100 %RH

Long Term Drift normal <0.5 %RH

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Temperature and Humidity LoRaWAN Sensor

Application Information

2.1 Function

The sensor works in OTAA and Class A mode. DEVEUI, APPEUI and APPKEY are stored in the sensor

and is necessary for joining a network. DEVEUI is labeled at the back of the device. APPEUI, APPKEY

should be provided by each application. Lansitec will help to configure this before shipping.

After power on and join the Lora network, sensor will send registration message to Application

Server(AS). If AS doesn’t reply, sensor will retry for 5 times before switching to default mode

(periodically report mode). Configuration information of the sensor is included in this registration

message for AS to validate.

Sensor starts to work after receiving acceptance response or no AS reply after 5 times registration

trial. Temperature and humidity will be reported to AS periodically. The duty cycle is configurable by

commands from AS. Temperature and humidity acquisition and report period is 10 minutes by

default.

According to LoRaWAN specification, downlink response time is decided by uplink duty cycle, user

should refer the needed response time to choose uplink duty cycle. Detailed downlink and uplink

definition are described below.

2.2 Uplink Message

2.2.1 Register

Bytes 1 1 1 1 2 2

Item TYPE SMODE POWER CFG TH CRC

TYPE field

Bit Name Value Description

7~4 TYPE 0x1 Message type. AS can use it to identify different

uplink messages.

3ADR 0:OFF

1: ON

2~0 MODE 0x01~0x07 Current working scheme which should be one of

ADR (Adaptive Date Rate) status

SMODE

SMODE field

Bit Name Value Description

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Temperature and Humidity LoRaWAN Sensor

7~0 SMODE 0x01: AU920

0x02: CLAA

0x04: CN470

0x08: AS923

0x10: EU433

0x20: EU868

0x40: US915

POWER field

Bit Name Value Description

7~3 POWER 0~31 Configured transmit power (dBm)

2~0 Reserved 0x0 Reserved for future use. If MODE is CLAA, it

Data scheme supported by tracker.

This field is preserved by Lansitec and will be

configured before shipping.

)

indicates the frequency sweep mode of the

tracker:

1: A mode

2: B mode

3: C mode

4: D mode

5: E mode

6: All frequency sweep

Refer to CLAA China 470M-510M Band Using

network technology requirements for detailed

information.

CFG field

Bit Name Value Description

7~4 DR 0~15 Data Rate(DR0~DR15).

3 REPTIND 0~1 Indicates whether report the H&T if the value is

the same. Default value is 0, means always

report.

2~0 Reserved 0x0 Reserved for future use.

TH field

Bit Name Value Description

15~0 TH 1~65535 The period of temperature and humidity report,

unit 10s.

CRC field

Bit Name Value Description

15~0 CRC CRC16 of previous fields with TYPE bits set to 0,

the polynomial is . AS only need to compare this

data field with the AS stored one to judge

whether configuration changed.

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