netvox RA0708 User manual

Wireless PH Sensor
RA0708_R72608_RA0708Y
Wireless PH Sensor
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 Contents
1. Introduction .............................................................................................................................................2
2. Appearance..............................................................................................................................................2
3. Features....................................................................................................................................................3
4. Set up Instruction.....................................................................................................................................4
5. Data Report..............................................................................................................................................5
5.1 Example of ReportDataCmd...........................................................................................................6
5.2 Report Configuration Example.......................................................................................................8
5.3 Calibration Configuration Example................................................................................................9
5.4 Example for MinTime/MaxTime logic.........................................................................................11
6. Installation .............................................................................................................................................12
6.1 RA0708............................................................................................................................................12
6.2 R72608.............................................................................................................................................12
6.3 RA0708Y......................................................................................................................................13
6.4 PH Sensor Use..............................................................................................................................14
6.5 PH Sensor Maintenance................................................................................................................15
7. Important Maintenance Instruction........................................................................................................16

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1. Introduction
RA0708_R72608_RA0708Y is a ClassA device based on the LoRaWAN open protocol.
RA0708_R72608_RA0708Y can be connected to the pH sensor and report the value collected by the sensor to the corresponding
gateway.
LoRa Wireless Technology:
LoRa is a wireless communication technology dedicated to long distances 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, and industrial monitoring. The main features include small size, low power consumption,
transmission distance, and anti-interference ability.
LoRaWAN:
LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and
gateways from different manufacturers.
2. Appearance
▲RA0708
Indicator
Function Key
Adapter 12V
PH Sensor

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3. Features
⚫Compatible with LoRaWAN
⚫RA0708 and RA0708Y use DC 12V adapter power supply
⚫R72608 uses solar panel and rechargeable lithium batteries
⚫Simple operation and setting
⚫pH value and temperature detection
⚫SX1276 wireless communication module
Waterproof Cover
Solar Panel
▲R72608

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4. Set up Instruction
On/Off
Power on
RA0708 and RA0708Y are connected to the DC 12V adapter for power-on
R72608 applies solar and rechargeable lithium batteries.
Turn on
Power on to turn on.
Restore to factory setting
Press and hold the function key for 5 seconds until green indicator flashes for 20 times.
Power off
Remove power
Note
1. Engineering test modes require the burning engineering test software.
2. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor
inductance and other energy storage components.
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 reset back to factory setting)
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
Please check the device verification information on the gateway or consulting your platform
server provider.
Function Key
Press and hold for 5 seconds
Restore to factory setting / Turn off
The green indicator flashes 20 times: Success
The green indicator remains off: Fail
Press once
The device is in the network: the green indicator flashes once and the device sends a data
report
The device is not in the network: green indicator remains off
Low Voltage Threshold
Low Voltage Threshold
10.5 V

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Restore to Factory Setting
Instruction
RA0708_R72608_RA0708Y has a network information memory function when power-down.
This function is turned off by default, that is, it will be re-joined every time it is powered on.
This function can be turned on by the ResumeNetOnOff command.
At this time, each time the power is rewritten, the last network joining information will be
recorded (including saving the network address information assigned to it, etc., if you want to
join a new network, you need to perform a factory resetting operation first.)
It will not be re-joined the previous network.
5. Data Report
The device will immediately send a version packet report along with an uplink packet including temperature, voltage, and pH value.
The device sends data based on the default configuration before any configuration is done.
Default setting
ReportMaxTime:
RA0708 / RA0708Y: 0xB4 (180s)
R72608: 0x708 (1800s)
Note: Value must be greater than ReportMinTime ≧ ReportType count *ReportMinTime + 10, units: seconds
ReportMinTime:
0x1E (30s): US915, AU915, KR920, AS923, IN865
0x78 (120s): EU868
ReportType count = 1
Note:
(1) The device report interval will be programmed based on the default firmware which may vary.
(2) The interval between two reports must be the Maxtime.
(3) ReportChange is not supported by RA0708_R72608_RA0708Y (Invalid configuration).
(4) Report cycle will be based on ReportMaxTime period when sending data packet (beginning to the end of the first data as
a period).
(5) Data packet: temperature, voltage and PH value.
(6) The device also supports Cayenne's TxPeriod cycle configuration instructions. Therefore, the device can also perform a
report according to the cycle time of the TxPeriod value; and whether the report period is ReportMaxTime or TxPeriod
will be depending on which cycle time is configured last time.
(7) It would take about 35 seconds for the PH sensor to sample and process the collected PH value if you were to manually

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trigger the device by pressing the button, please be patient.
Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver
http://www.netvox.com.cn:8888/cmddoc to resolve uplink data.
5.1 Example of ReportDataCmd
Fport: 0x06
Bytes
1
1
1
Var(Fix = 8 Bytes)
Version
DeviceType
ReportType
NetvoxPayLoadData
Version –1 bytes –0x01——the Version of NetvoxLoRaWAN Application Command Version
DeviceType –1 byte –Device Type of Device
ReportType –1 byte –the Presention of the NetvoxPayLoadData，according the devicetype
NetvoxPayLoadData –Fixed bytes (Fixed =8bytes)
Tips
1. Battery Voltage
(a) The voltage value is bit 0 ~ bit 6, bit 7=0 is normal voltage, and bit 7=1 is low voltage.
Battery=0xE9, binary=1110 1001, if bit 7= 1, it means low voltage.
The actual voltage is 0110 1001 = 0x69 = 105, 105*0.1v =10.5v.
(b) If the battery is equal to 0x00, it means that the device is powered by a DC power supply.
2. Version Packet
When Report Type=0x00 is the version packet, such as 0105000D04202101060000, the firmware version is 2021.01.06
3. Data Packet
(a) When Report Type=0x01 is data packet.
(If the device data exceeds 11 bytes or there are shared data packets, the Report Type will have different values.)
(b) When Report Type=0xFFFF, it means that RA0708/ R72608/RA0708Y does not support the connected device or sensor
malfunction.
4. Signed Value:
When the temperature is negative, 2's complement should be calculated.

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Device
DeviceType
ReportType
NetvoxPayLoadData
RA07 Series
R726 Series
R727 Series
0x05
0x09
0x0D
0x08
Battery
(1Byte,
unit:0.1V)
PH
(2Byte ,0.01pH)
TemperaturewithPH
(Signed 2Bytes,
unit: 0.01°C)
ORP
(Signed
2Byte, 1mv)
Reserved
(1Byte,
fixed
0x00)
0x12
Battery(1Byte,
unit:0.1V)
ThresholdAlarm(7Bytes,
Bit0_LowPM2.5Alarm(ug/m3),
Bit1_HighPM2.5Alarm(ug/m3),
Bit2_LowPM10Alarm(ug/m3),
Bit3_HighPM10Alarm(ug/m3),
Bit4_LowO3Alarm,
Bit5_HighO3Alarm,
Bit6_LowCOAlarm,
Bit7_HighCOAlarm,
Bit8_LowNOAlarm,
Bit9_HighNOAlarm,
Bit10_LowNO2Alarm,
Bit11_HighNO2Alarm,
Bit12_LowSO2Alarm,
Bit13_HighSO2Alarm,
Bit14_LowH2SAlarm,
Bit15_HighH2SAlarm,
Bit16_LowCO2Alarm,
Bit17_HighCO2Alarm,
Bit18_LowNH3Alarm,
Bit19_HighNH3Alarm,
Bit20_LowNosieAlarm,
Bit21_HighNosieAlarm,
Bit22_LowPHAlarm,
Bit23_HighPHAlarm,
Bit24_LowORPAlarm,
Bit25_HighORPAlarm,
Bit26_LowNTUAlarm,

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Example of Uplink: 0105080002B40866FFFF00
1st byte (01): Version
2nd byte (05): DeviceType 0x05－RA07 series
3rd byte (08): ReportType
4th byte (00): Battery 0v, 00 (HEX) = 0 (DEC) 0*0.1v = 0.0v
5th 6th byte (02B4): pH－6.92pH, 02B4 (HEX) = 692 (DEC), 692*0.01°C = 6.92pH
7th 8th byte (0866): TemperaturewithPH－21.50℃, 0866(HEX)=2150(DEC),2150*0.01℃=21.50℃
9th 10th byte (FFFF): ORP－N/A
11th byte (00): Reserved
5.2Report Configuration Example
Fport: 0x07
Bytes
1
1
Var(Fix = 9 Bytes)
CmdID
DeviceType
NetvoxPayLoadData
CmdID–1 byte
DeviceType–1 byte –Device Type of Device
NetvoxPayLoadData–var bytes (Max=9bytes)
(1) Configure RA0708 device parameters MinTime = 30s, MaxTime = 3600s (3600>30*1+10)
Note: The value of ReportMaxTime should be greater than (ReportType count *ReportMinTime+10) (Unit: second)
RA0708 Report data: PH value, temperature; ReportType Count = 1 (The MinTime of EU868 cannot be less than 120s.)
Downlink: 0105001E0E100000000000
Device returns:
8105000000000000000000 (configuration successful)
8105010000000000000000 (configuration failed)
Description
Device
Cmd
ID
Device
Type
NetvoxPayLoadData
ConfigReportReq
RA07 Series
R726 Series
R727 Series
0x01
0x05
0x09
0x0D
MinTime
(2bytes Unit:s)
MaxTime
(2bytes Unit:s)
Reserved
(5Bytes,Fixed 0x00)
ConfigReportRsp
0x81
Status
(0x00_success)
Reserved
(8Bytes,Fixed 0x00)
ReadConfigReportReq
0x02
Reserved
(9Bytes,Fixed 0x00)
ReadConfigReportRsp
0x82
MinTime
(2bytes Unit:s)
MaxTime
(2bytes Unit:s)
Reserved
(5Bytes,Fixed 0x00)

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(2) Read RA0708 device parameters
Downlink: 0205000000000000000000
Device returns:
8205001E0E100000000000 (device current parameter)
5.3Calibration Configuration Example
FPort: 0x0E
(1) Configure RA0708 device Temperature Calibration: 1℃; Configure channel 0; Multiplier: 1, Divisor: 1, DeltValue: 100
Downlink: 013D000001000100640000
Device returns:
813D000000000000000000 (configuration successful)
813D000100000000000000 (configuration failed)
(2) Read RA0708 device parameters
Downlink: 023D000000000000000000
Device returns:
823D000001000100640000 (device current parameter)
(3) Configure RA0708 device PH value: 1; Configure channel 1; Multiplier: 1, Divisor: 1, DeltValue: 100
Downlink: 0113010001000100640000
Device returns:
8113010000000000000000 (configuration successful)
8113010100000000000000 (configuration failed)
Description
Cmd
ID
SensorType
PayLoad(Fix =9 Bytes)
SetGlobal
CalibrateReq
0x01
0x13 PH
0x3D pH Temperature
Channel
(1Byte,
0_Channel1,
1_Channel2,etc)
Multiplier
(2bytes, Unsigned)
Divisor
(2bytes, Unsigned)
DeltValue
(2bytes, Signed)
Reserved
(2Bytes, Fixed 0x00)
SetGlobal
CalibrateRsp
0x81
Channel (1Byte)
0_Channel1,
1_Channel2,etc
Status
(1Byte, 0x00_success)
Reserved
(7Bytes, Fixed 0x00)
GetGlobal
CalibrateReq
0x02
Channel (1Byte)
0_Channel1,
1_Channel2,etc
Reserved
(8Bytes, Fixed 0x00)
GetGlobal
CalibrateRsp
0x82
Channel
(1Byte,
0_Channel1,
1_Channel2,etc)
Multiplier
(2bytes, Unsigned)
Divisor
(2bytes, Unsigned)
DeltValue
(2bytes, Signed)
Reserved
(2Bytes, Fixed 0x00)

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(4) Read RA0708 device parameters
Downlink: 0213000000000000000000
Device returns:
8213010001000100640000 (device current parameter)

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5.4Example for MinTime/MaxTime logic
Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V
Note: MaxTime = MinTime. Data will only be reported based on MaxTime (MinTime) duration regardless BatteryVoltageChange
value.
Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.
Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.
1H
2H
3H
sleeping (MinTime)
sleeping (MinTime)
MaxTime
MaxTime
Wake up and collect data
REPORTS 3.6V
Wakes up and collect data
REPORTS 3.6V
Wakes up and collect data
REPORTS 3.6V
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
sleeping
sleeping
sleeping
sleeping (MinTime)
MaxTime
0H
1H
15thM
30thM
45thM
2H
MaxTime
sleeping
sleeping
0H
30thM
2H 10thM
15thM
45thM
1H
1H 25thM
1H 40thM
1H 55thM
1H 10thM
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
Wakes up and
collects data
3.6V
Does not report
Users push the button,
REPORTS 3.5V.
Recalculate MaxTime.

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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.
6. Installation
6.1 RA0708
RA0708 does not have a waterproof function. After the network joining is completed, please place it indoors.
6.2 R72608
R72608 product is waterproof. After the network-joining is completed, please leave it outdoors.
(1) In the position to be installed, loosen the U-shaped screw of the bottom of the R72608 and the mating washer nut, and fix the
U-shaped screw through the appropriate size cylinder on the R72608 fixed strut piece. Install the washer nut in order, and lock the
nut until the R72608 body is stable and does not shake.
(2) At the upper side of the fixed position of R72608, loosen the two U-shaped screws on the side of the solar panel and the mating
washer nut. Fix the U-shaped screw through the appropriate size cylinder on the main bracket of the solar panel, and install the
gasket in sequence. Lock the nut until the solar panel is stable and does not shake.
(3) Adjust the angle of the solar panel. After the adjustment is completed, lock the nut.
(4) Connect the R72608 top waterproof cable to the solar panel wiring and lock it tight.

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(5) R72608 has a battery compartment inside. Users can buy and install rechargeable 18650 lithium battery, 3 sections total. A single
rechargeable lithium battery voltage is 3.7V, and the capacity is recommended at 5000mah.
The installation of rechargeable lithium battery steps are as follows:
1: Remove the four screws around the battery cover
2: Insert three 18650 lithium batteries. (Please make sure the battery is positive and negative)
3: Press the activation button on the battery pack for the first time.
4: After activation, close the battery cover and lock the screws around the battery cover.
6.3 RA0708Y
RA0708Y product is waterproof and can be placed outdoors after the network joining is completed.
(1)In the position to be installed, loosen the bottom U-shaped screw of the RA0708Y and the mating washer nut, and fix the
U-shaped screw through the appropriate size cylinder on the RA0708Y fixed strut piece. Install the washer nut in order, lock the
nut until RA0708Y body is stable and does not shake.
(2) Loosen the M5 nut at the bottom of the RA0708Y matte and take the matte together with the screw.
(3) Insert the power DC plug from the center through hole of the RA0708Y bottom cover, and insert it into the RA0708Y DC socket,
and then return the mating screw to the original position and lock the M5 nut tight.
activation button

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6.4 PH Sensor Use
The water level of the water you plan to measure the pH value of is recommended to be higher than the spiral curve on the pH sensor.
`
Note:
(1)The sensor is recommended to be installed with angles higher than 15 degrees.
(2)Horizontal or upside-down position is not allowed.
Spiral curve
> 15 °

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6.5 PH Sensor Maintenance
When measuring the pH sensor, it should be cleaned in distilled water (or deionized water), and the filter paper should be used to
absorb moisture to prevent impurities from being introduced into the liquid to be tested. 1/3 of the sensor should be inserted into the
solution to be tested.
The sensor should be washed when not in use, inserted into a protective sleeve with a 3.5 mol/L potassium chloride solution, or the
sensor inserted into a container with a 3.5 mol/L potassium chloride solution.
If the liquid in the cover of the pH sensor dries out, you could replace the liquid with potassium chloride liquid or tap water. Please
do not use purified water or deionized water.
Check if the terminal is dry. If it is stained, wipe it with absolute alcohol and dry it. Avoid long-term immersion in distilled water or
protein solution and prevent contact with silicone grease. With a longer sensor, its glass film may become translucent or with
deposits, which can be washed with dilute hydrochloric acid and rinsed with water. The sensor is used for a long time. When a
measurement error occurs, it must be calibrated with the meter for calibration.
When the calibration and measurement cannot be performed while the sensor is being maintained and maintained in the above
manner, the sensor has failed. Please replace the sensor.
Note:

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PH sensor can be placed in water for a long time. If PH sensor is not applicable, please add some water to the sponge in the
protective shell of the probe, and then install the protective shell to the probe position. PH sensor can not be exposed to the sun,
and should be placed in a humid environment. If PH sensor is put in the water for a long time, it will consume the electrode.
When the electrode is consumed to a certain extent, the electrode needs to be replaced, and the life span is about half a year.
7. Important Maintenance Instruction
Kindly pay attention to the following to achieve the best maintenance of the product:
•Do not put the device near or submerge into water. Minerals in rain, moisture, and other liquids could cause corrosion of
electronic components. Please dry the device, if it gets wet.
•Do not use or store the device in dusty or dirty environments to prevent damage to parts and electronic components.
•Do not store the device in high temperatures. This may shorten the lifespan of electronic components, damage batteries, and
deform plastic parts.
•Do not store the device in cold temperatures. Moisture may damage circuit boards as the temperatures rise.
•Do not throw or cause other unnecessary shocks to the device. This may damage internal circuits and delicate components.
•Do not clean the device with strong chemicals, detergents, or strong detergents.
•Do not apply the device with paint. This may block detachable parts and cause malfunction.
•Do not dispose of batteries in fire to prevent explosion.
The instructions are applied to your device, battery, and accessories.
If any device is not working properly, please bring it to the nearest authorized service provider for repair.