netvox R720FLD User manual

Model：R720F Series
R720FLD / R720FLO / R720FU : Wireless Liquid Hand Soap Sensor
R720FW : Wireless Water Leak Detector
Wireless Liquid Hand Soap Sensor/
Wireless Water Leak Detector
R720F Series
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.................................................................................................3
3. Main Features.............................................................................................5
4. Set up Instruction.......................................................................................6
5. Data Report ................................................................................................7
6. Installation................................................................................................11
7. Information about Battery Passivation ....................................................12
8. Important Maintenance Instruction..........................................................13

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1. Introduction
R720F series is a Class A device based on LoRaWANTM protocol of NETVOX and is compatible with LoRaWAN protocol.
It is a wireless communication device that can detect the level of hand wash or the water leakage. The detected data will be
transmitted to other device for display via wireless network.
The hand wash detection devices are R720FLO,R720FLD,R720FU. The devices are connected with two electrode rods.
The shape and orientation of electrode rod of can be selected according to the needs, and the electrode rode can be trimmed to
the required length by self according to the demand.
The water leakage detection device is R720FW.
Hand Wash Detection
1. Regularly check the current voltage and state of hand wash according to the configured time.
2. When the device detects the change in the current state of the hand wash, it will report a data packet of the current
voltage and state of the hand wash.
3. Press the function key to immediately detect the current voltage and state of the hand wash, and a currently detected
data packet will be reported.
Water Leakage Detection
1. Regularly check the current voltage and state of water leakage according to the configured time
2. When the device detects the change in the current water leakage state, it will report a data packet with the current
voltage and state of water leakage.
3. Press the function key to immediately detect the current voltage and state of water leakage, and a currently detected data
packet will be reported.
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.

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2. Appearance
Hand Wash Detection:
R720FLO L-type Probe- Electrode rods Upward
R720FLD L-type Probe- Electrode rods Downward
Function Key
Indicator
Electrode Rod

4
R718FU U-type Probe
Water Leakage Detection:
R720W

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3. Main Features
Apply SX1276 wireless communication module
2 ER14505 lithium batteries (3.6V / section) in parallel
Detect the usage status of the hand wash / Detect the water leakage
Protection Class IP65
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 lifetime for varied models at 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 and the green indicator flashes 20 times.
Power Off Remove Batteries
Note
1. Remove and insert the battery: the device is in the turn-off state by default.
2. After 5 seconds of powering on, the device is in engineering testing mode.
3. Every time, after remove and reinsert the battery, the device is in a turn-off state and
need to turn on again.
4. 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 Join 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
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 you
r 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: green indicator flashes once and sends a report
The device is not in the network: green indicator remains off
Sleeping Mode
The device turns on and joins 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 Threshold Alarm
Low Voltage
3.2 V

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5.
Data Report
Hand Wash Detection:
After power on, the device will immediately send a version packet report and a data report including the voltage of the
battery and the current state of the hand wash.
Water Leakage Detection:
After power on, the device will immediately send a version packet report and a data report including the voltage of the
battery and the current state of the water leakage.
The device sends data according to the default configuration before any other configuring.
Default setting:
Report MaxTime：Max Interval =3600s (1 hour)
Report MinTime：Min Interval =3600s (1 hour) (Every Min Interval will detect the current voltage one time)
Reportchange：BatteryChange : 0x01(0.1v)
* If there is a special customized order, the setting of the device will change according to customer’s requirements
R720F trigger:
1. It can be used to detect the current voltage and the current state of hand wash according to the default.
2. As soon as the device detects the change in the current state of the hand wash, it will report a data packet including the
current voltage value and the current state of the hand wash.
3. Press the button, and it will immediately detect the current voltage and the current state of the hand wash, and then report
a currently detected data packet.
Note:
1. The cycle of the device sending the data report is according to the default.
2. The interval between two reports must be the MinTime.
The device reported data parsing please refer to Netvox LoRaWAN Application Command document and Netvox Lora
Command Resolver http://loraresolver.netvoxcloud.com:8888/page/index
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

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Example of ConfigureCmd
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)
Description Device Cmd
ID Device Type NetvoxPayLoadData
ConfigReport
Req
R720F
0x01
0xB7
MinTime
(2bytes Unit: s)
MaxTime
(2bytes Unit: s)
BatteryChange
(1byte Unit: 0.1v)
Reserved
(4Bytes, 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)
Reserved
(4Bytes,Fixed 0x00)
（1）Configure R720F device parameter MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v
Downlink: 01B7003C003C0100000000
Device return：
81B7000000000000000000 (configuration success)
81B7010000000000000000 (configuration failure)
（2）Read R720F device parameter
Downlink: 02B7000000000000000000
Device return：
82B7003C003C0100000000 (device current parameter)

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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
The devicetype is listed in Netvox LoRaWAN Application Devicetype doc
ReportType – 1 byte –the presentation of the NetvoxPayLoadData，according the devicetype
NetvoxPayLoadData– Fixed bytes (Fixed =8bytes)
Device
DeviceType
ReportType
NetvoxPayLoadData
R720F 0xB7 0x01 Battery
(1Byte, unit:0.1V) Status (1Byte 0:off 1:on) Reserved (6Bytes,fixed 0x00)
Hand Wash Detection
Uplink: 01B7012401000000000000 // The report of the status is 1 meaning it has hand wash.
Uplink: 01B7012400000000000000 // The report of the status is 0 meaning it has no hand wash.
Water Leakage Detection
Uplink: 01B7012401000000000000 // The report of the status is 1 meaning it has water leakage.
Uplink: 01B7012400000000000000 // The report of the status is 0 meaning it has no water leakage.
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#2based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.
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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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.

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6. Installation
The device is waterproof.
The installation instruction is as the figure below.
1.The device can be fixed on the cover by the force rubber, or make the hole in the cover and bundle the device with cable ties.
2. The length of the probe can be trimmed according to personal requirements.
3. When the level of the hand wash is lower than electrode rods, the device will issue a warning.
R720FLDR720FLO R720FU
L-type Probe- Electrode rods Downward L-type Probe- Electrode rods Upward U-type Probe
Installation method of water leakage detection device:
Place the device on the location where water leakage needs to be detected. If users need to detect water leakage on the ground,
please refer to the following figure.
R720FW

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Note:
Please use the screwdriver to open the cover to install the battery.
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.
*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.
*How to activate the battery
1) Connect a battery to a 68ohm resistor in parallel
2) Keep the connection for 6~8 minutes
3) The voltage of the circuit should be ≧3.3V

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8. Important Maintenance Instruction
The device is a product with 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 water 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 way can damage its detachable parts and electronic components.
• Do not store in excessive heat place. 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. Treating equipment roughly can destroy internal circuit boards and delicate
structures.
• Do not wash with strong chemicals, detergents, or strong detergents.
• Do not paint the device. Smudges can make debris block detachable parts up and affect normal operation.
• Do not throw the battery into the fire to prevent the battery from exploding. Damaged batteries may also explode.
All the above suggestions apply equally to your device, batteries, and accessories.
If any device is not operating properly.
Please take it to the nearest authorized service facility for repairing.