netvox RA0708 User manual

Model：RA0708_R72608_RA0708Y
Wireless pH Sensor
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 Content
1. Introduction .............................................................................................................................................................2
2. Appearance ..............................................................................................................................................................2
3. Main Features..........................................................................................................................................................3
4. Set up Instruction.....................................................................................................................................................3
5. Data Report..............................................................................................................................................................5
6. Installation...............................................................................................................................................................8
6.1 RA0708 ............................................................................................................................................................8
6.2 R72608 .............................................................................................................................................................8
6.3 RA0708Y .........................................................................................................................................................9
6.4 PH Sensor Use..................................................................................................................................................9
6.5 PH Sensor Maintenance.................................................................................................................................11
7. Important Maintenance Instruction.......................................................................................................................11

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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 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
RA0708
Function Key
Indicator
PH Sensor
Adapter 12v

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3. Main 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
⚫Adopt SX1276 wireless communication module
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 till 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
(Or at factory setting )
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.)
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
Suggest to check the device verification information on the gateway or consult your platform
server provider.

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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: 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
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.
Operation
1. Press and hold the button for 5 seconds and release (the binding button is released when the
LED flashes), and the
LED flashes for 20 times.
2. The device will automatically restart to re-joining.

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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 in the default configuration before any configuration is done.
Default setting:
ReportMaxTime:
RA0708/RA0708Y is 180s
R72608 is 900s
Value must be greater than ReportMinTime ≧ ReportType count *ReportMinTime + 10 ,units:
seconds
ReportMinTime: 30s
ReportChange: 0
ReportType count = 1
Note:
(1) The device report interval will be programmed base 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
trigger the device by pressing the button, please be patient.
The device reported data parsing please refer to
Netvox LoraWAN Application Command document and Netvox Lora Command Resolver
http://www.netvox.com.cn:8888/page/index

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Report Configuration Example:
(1) Configure RA0708 device parameters MinTime = 30s, MaxTime = 120s (120>30*1+10)
Downlink: 0105001E00780000000000
Device returns:
8105000000000000000000 (configuration is successful)
8105010000000000000000 (configuration failed)
(2) Read RA0708 device parameters
Downlink: 0205000000000000000000
Device returns:
8205001E00780000000000 (device current parameter)
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.
Description
Device
Cmd
ID
Device
Type
NetvoxPayLoadData
Config
ReportReq
RA07 Series
R726 Series
R727 Series
0x01
0x05
0x09
0x0D
MinTime
(2bytes Unit:s)
MaxTime
(2bytes Unit:s)
Reserved
(5Bytes,Fixed 0x00)
Config
ReportRsp
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)
Reserved
(5Bytes,Fixed 0x00)
Wake up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V

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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
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
6.1 RA0708
RA0708 does not have a waterproof function. After the network joining is completed, please place it indoor.
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, lock the nut
till 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 nut till 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.
(5) R72608 has a battery compartment inside. Users can buy and install rechargeable 18650 lithium battery, 3 sections totally. A single
rechargeable lithium battery voltage is 3.7V, and the capacity is recommended 5000mah.
The installation of rechargeable lithium battery steps are as follows:
1: Remove the four screws around battery cover
2: Insert three 18650 lithium batteries. (Please make sure the battery 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 battery cover.
activation button

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6.3RA0708Y
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 till 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.
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

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> 15 °

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6.5PH 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.
7. Important Maintenance Instruction
Your device is a product of superior design and craftsmanship and should be used with care. The following suggestions will help you use
the warranty service effectively.
• Keep the equipment dry. Rain, moisture, and various liquids or moisture may contain minerals that can corrode electronic circuits. In
case the device is wet, please dry it completely.
• Do not use or store in dusty or dirty areas. This can damage its detachable parts and electronic components.
• Do not store in excessive heat. High temperatures can shorten the life of electronic devices, destroy batteries, and deform or melt some
plastic parts.
•Do not store in excessive cold place. 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 wash with strong chemicals, detergents or strong detergents.
• Do not apply with paint. Smudges can block debris in detachable parts and affect normal operation.
• Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteries may also explode.
All of the above suggestions apply equally to your device, battery and accessories. If any device is not working properly.
Please take it to the nearest authorized service facility for repair.