netvox R718B2 User manual

Model：R718B2
Wireless 2-Gang Resistance Temperature Detector
Wireless 2-Gang Resistance
Temperature Detector
R718B2
User Manual
Copyright©Netvox Technology Co., Ltd.
This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict
confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX Technology. The
specifications are subject to change without prior notice.

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Table of Content
1. Introduction ......................................................................................................................................................................2
2. Appearance ....................................................................................................................................................................... 2
3. Main Features...................................................................................................................................................................3
4. Set up Instruction.............................................................................................................................................................. 4
5. Data Report.......................................................................................................................................................................5
6. Installation ........................................................................................................................................................................ 8
7. Information about Battery Passivation.............................................................................................................................9
7.1 To determine whether a battery requires activation..................................................................................................9
7.2 How to activate the battery ....................................................................................................................................... 9
8. Important Maintenance Instruction................................................................................................................................10

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1. Introduction
R718B2 is a Wireless 2-Gang Resistance Temperature Detector for Netvox ClassA type devices based on the LoRaWAN open protocol
and is compatible with the LoRaWAN protocol.
R718B2 connects two external resistance temperature detectors (PT1000) to measures the temperature.
LoRa Wireless Technology:
LoRa is a wireless communication technology dedicated to long distance and low power consumption. Compared with other
communication methods, LoRa spread spectrum modulation method greatly increases to expand the communication distance. Widely
used in long-distance, low-data wireless communications. For example, automatic meter reading, building automation equipment,
wireless security systems, industrial monitoring. Main features include small size, low power consumption, transmission distance,
anti-interference ability and so on.
LoRaWAN:
LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and gateways
from different manufacturers.
2. Appearance
Round head probe
PT1000
Indicator
Function Key

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Needle probe L-type probe
3. Main Features
Adopt SX1276 LoRa wireless communication module
2 ER14505 battery AA SIZE (3.6V / section) parallel power supply
PT1000 Platinum resistance temperature sensor detection
The base is attached with a magnet that can be attached to a ferromagnetic material object
Host body protection class IP65 / IP67 (optional)
Compatible with LoRaWANTM Class A
Frequency hopping spread spectrum
Configuration parameters can be configured via a third-party software platform, data can be read and alerts can be set via SMS text
and email (optional)
Applicable to third-party platforms: Actility/ThingPark, TTN, MyDevices/Cayenne
Low power consumption and long battery life
Note*:
Battery life is determined by the sensor reporting frequency and other variables, please refer to
http://www.netvox.com.tw/electric/electric_calc.html
On this website, users can find battery life of various models in different configurations.

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4.Set up Instruction
On/Off
Power on Insert batteries. (users may need a screwdriver to open)
Turn on Press and hold the function key for 3 seconds till the green indicator flashes once.
Turn off (Restore to factory setting) Press and hold the function key for 5 seconds till green indicator flashes for 20 times.
Power off Remove Batteries.
Note:
1. Remove and insert the battery; the device is at off state by default. Press and hold
the function key for 3 seconds till the green indicator flashes once to turn on the
device.
2. On/off interval is suggested to be about 10 seconds to avoid the interference of
capacitor inductance and other energy storage components.
3. At 1st -5th second after power on, the device will be in engineering test mode.
Network Joining
Never joined the network
Turn on the device to search the network.
The green indicator stays on for 5 seconds: success
The green indicator remains off: fail
Had joined the network
(not at factory setting mode)
Turn on the device to search the previous network.
The green indicator stays on for 5 seconds: success
The green indicator remains off: fail
Fail to join the network (when the device is on)
Suggest to check the device verification information on the gateway or consult your
platform server provider.
Function Key
Press and hold for 5 seconds
Restore to factory setting / Turn off
The green indicator flashes for 20 times: success
The green indicator remains off: fail
Press once The device is in the network: green indicator flashes once and sends a report
The device is not in the network: green indicator remains off
Sleeping Mode
The device is on and in the network
Sleeping period: Min Interval.
When the reportchange exceeds setting value or the state changes: send a data report
according to Min Interval.
Low Voltage Warning
Low Voltage 3.2V

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5. Data Report
Data report configuration and sending period are as following:
Min Interval
(Unit:second)
Max Interval
(Unit:second) Reportable Change Current Change≥ Reportable Change
Current Change＜
Reportable Change
Any number between
1~65535
Any number between
1~65535 Can not be 0 Report per Min Interval
Report
per Max Interval
The device will immediately send a version packet report along with an uplink packet including temperature1, temperature2 and
battery voltage.
The device sends data in the default configuration before any configuration is done.
Default setting:
MaxTime : Max Interval = 15 min = 900s
MinTime : Min Interval = 15 min = 900s
BatteryChange: 0x01 (0.1V)
TemperatureChange:0x0064 (10°C)
Note:
The device report interval will be programmed based on the default firmware which may vary.
The interval between two reports must be the minimum time.
Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver
http://www.netvox.com.cn:8888/page/index to resolve uplink data.

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Report configuration example:
1. Configure device parameters MinTime = 1min, MaxTime = 1min, BatteryChange = 0.1v, Temperaturechange = 10℃
Downlink: 0114003C003C0100640000
Device returns:
8114000000000000000000 (configuration successful)
8114010000000000000000 (configuration failed)
2. Read device parameters
Downlink: 0214000000000000000000
Device returns:
8214003C003C0100640000 (current device configuration parameters)
Description Device CmdID Device
Type NetvoxPayLoadData
ConfigReport
Req
R718B2
0x01
0x14
MinTime
(2bytes Unit:s) MaxTime (2bytes Unit:s) BatteryChange (1byte Unit:0.1v) TemperatureChange (2byte Unit:0.1℃) Reserved (2Bytes,Fixed 0x00)
ConfigReport
Rsp 0x81 Status
(0x00_success) Reserved (8Bytes,Fixed 0x00)
ReadConfig
ReportReq 0x02 Reserved
(9Bytes,Fixed 0x00)
ReadConfig
ReportRsp 0x82 MinTime
(2bytes Unit:s) MaxTime (2bytes Unit:s) BatteryChange (1byte Unit:0.1v) TemperatureChange (2byte Unit:0.1℃) Reserved (2Bytes,Fixed 0x00)

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Example for MinTime/MaxTime logic:
Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V
MaxTime MaxTime
Sleeping(MinTime) Sleeping(MinTime)
Note: MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange value.
Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.
MaxTime
Sleeping(MinTime) sleeping sleeping sleeping
0H 15th M 30th M 45th M 1H 2H
Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.
MaxTime
sleeping sleeping ...
0H 15th M 30th M 45th M 1H 1H 10th M 1H 25th M 1H 40th M 1H 55th M 2H 10th M
Notes :
1) The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect data.
2) The data collected is compared with the last data reported. If the data variation is greater than the ReportableChange value, the device reports
according to MinTime interval. If the data variation is not greater than the last data reported, the device reports according to MaxTime interval.
3) We do not recommend to set the MinTime Interval value too low. If the MinTime Interval is too low, the device wakes up frequently and the battery
will be drained soon.
4) Whenever the device sends a report, no matter resulting from data variation, button pushed or MaxTime interval, another cycle of MinTime/MaxTime
calculation is started.
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
REPORTS 3.6V
Wakes up and
collects data
REPORT 3.6V
Wakes up and
collects data
REPORTS 3.6V
Wakes up and collects data
3.5V |3.5-3.6|=0.1
REPORTS 3.5V
Wakes up and
collects data
3.5V
Does not report
Wakes up and
collects data
3.5V
Does not report
Wakes up and
collects data
3.5V
Does not report
Wakes up and
collects data 3.5V
Does not report
Wakes up and
collects data
3.5V
Does not report
Wakes up and
collects data
REPORTS 3.5V
Wake up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V
Wakes up and
collects data
3.6V
Does not report
Users push the button,
REPORTS 3.5V.
Recalculate MaxTime.

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6. Installation
This product comes with waterproof function.
When using it, the back of it can be adsorbed on the iron surface, or the two ends can be fixed to the wall with screws.
1. The Wireless 2-Gang Resistance Temperature Detector
(R718B2) has a built-in magnet (see Figure 1 below). When
installed, it can be attached to the surface of an object with
iron which is convenient and quick.
To make the installation more secure, use screws (purchased)
to secure the unit to a wall or other surface (see Figure 2
below).
Note:
Do not install the device in a metal shielded box or in an
environment with other electrical equipment around it to
avoid affecting the wireless transmission of the device.
R718B2 is suitable below scenarios:
Oven
Industrial control equipment
Semiconductor industry
2. When R718B2 is compared with the last reported
values, the temperature change is exceeded 0.1°C
(default),it will report values at the MinTime interval;
If does not exceeded 0.1°C (default) ,it will report values
at the MaxTime interval;
Temperature probe

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Note:
Please do not disassemble the device unless it is required to replace the batteries.
Do not touch the waterproof gasket, LED indicator light, function keys when replacing the batteries. Please use suitable screwdriver to
tighten the screws (if using an electric screwdriver, it is recommended to set the torque as 4kgf) to ensure the device is impermeable.
7. Information about Battery Passivation
Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many advantages
including low self-discharge rate and high energy density.
However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium anode and
thionyl chloride if they are in storage for a long time or if the storage temperature is too high. This lithium chloride layer prevents rapid
self-discharge caused by continuous reaction between lithium and thionyl chloride, but battery passivation may also lead to voltage
delay when the batteries are put into operation, and our devices may not work correctly in this situation.
As a result, please make sure to source batteries from reliable vendors, and the batteries should be produced within the last three
months.
If encountering the situation of battery passivation, users can activate the battery to eliminate the battery hysteresis.
7.1 To determine whether a battery requires activation
Connect a new ER14505 battery to a 68ohm resistor in parallel, and check the voltage of the circuit.
If the voltage is below 3.3V, it means the battery requires activation.
7.2 How to activate the battery
a. Connect a battery to a 68ohm resistor in parallel
b. Keep the connection for 6~8 minutes
c. The voltage of the circuit should be ≧3.3V

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8. Important Maintenance Instruction
Kindly pay attention to the following in order to achieve the best maintenance of the product:
•Keep the device dry. Rain, moisture, or any liquid, might contain minerals and thus corrode
electronic circuits. If the device gets wet, please dry it completely.
•Do not use or store the device in dusty or dirty environment. It might damage its detachable parts
and electronic components.
•Do not store the device under excessive heat condition. High temperature can shorten the life of
electronic devices, destroy batteries, and deform or melt some plastic parts.
•Do not store the device in places that are too cold. Otherwise, when the temperature rises to
normal temperature, moisture will form inside, which will destroy the board.
•Do not throw, knock or shake the device. Rough handling of equipment can destroy internal
circuit boards and delicate structures.
•Do not clean the device with strong chemicals, detergents or strong detergents.
•Do not apply the device with paint. Smudges might block in the device and affect the operation.
•Do not throw the battery into the fire, or the battery will explode. Damaged batteries may also
explode.
All of the above applies to your device, battery and accessories. If any device is not working properly, please take it to the nearest
authorized service facility for repair.