Netvox R720FLT Wireless Toilet Water Tank Leakage Sensor User Manual

Netvox R720FLT Wireless Toilet Water Tank Leakage Sensor

Product Information

• Product Name: Wireless Toilet Water Tank Leakage sensor

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• Model: R720FLT

Introduction
The Wireless Toilet Water Tank Leakage sensor is designed to monitor the water make-up time in a toilet water tank. It detects any abnormal state where the actual water make-up time exceeds the preset time. The sensor reports the current voltage value, current water make-up times, and status of the toilet water tank.

Appearance
The sensor has a compact design with the following components

• Function Key
• Indicator
• Electrode Rod

3. Main Features

• Utilizes SX1276 wireless communication module for reliable transmission
• Powered by 2 ER14505 lithium batteries (3.6V/section) in parallel for long battery life
• Detects the number and status of make-up water in the toilet water tank
• Protection Class IP65 for waterproof and dustproof performance
• Compatible with LoRaWANTM Class A for interoperability with different devices and gateways
• Frequency hopping spread spectrum for enhanced signal stability
• Supports third-party platforms such as Actility/ThingPark, TTN, MyDevices/Cayenne
• Low power consumption for extended battery life

Note: Battery life may vary based on the sensor reporting frequency and other variables. For more information, refer to http://www.netvox.com.tw/electric/electric_calc.html.

4. Set up Instruction

• Power On: Insert batteries (users may need a screwdriver to open). Press and hold the function key for 3 seconds until the green indicator flashes once.

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• Power Off (Restore to factory setting): Press and hold the function key for 5 seconds until the green indicator flashes 20 times.

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• Note: To avoid interference, the on/off interval is suggested to be about 10 seconds.

Network Joining

• Never Join the Network: The sensor has not joined any network.
• Had joined the network: The sensor has successfully joined a network.
• Fail to join the network: Press and hold the function key for 5 seconds.

Low Voltage Threshold Alarm

• Low Voltage: The sensor will sound an alarm when the battery voltage is low.
• Remove and insert the battery: The device is in the turn-off state by default.

Note
The sensor enters engineering testing mode after 5 seconds of powering on. It is recommended to follow the given instructions for optimal usage.

Introduction

R720FLT is a wireless communication device for netvox ClassA device based on LoRaWAN open protocol.
The device is connected with two electrode rods to detect the water make-up of the toilet water tank, detect the daily water make-up times and whether the water tank is faulty, and transmit the detected data to other devices through the wireless network for display; Compatible with LoRaWAN protocol. The toilet water tank leakage detection device can cut the electrode rod to the required length as required.

1. The status of the toilet water tank is determined according to the configured water make-up time (default is 5 minutes). When the actual water make-up time of the toilet exceeds the preset time, the toilet water tank is in an abnormal state, and a data package of the current voltage value, the current water make-up times and the status is reported.
2. Press the key to immediately detect the current voltage value, the current number and status of toilet water tank replenishment, and report a current detected data packet.
3. Check the water supplement times every 24 hours. If the preset times are exceeded (50 times by default), the toilet water tank is in an abnormal state, and report a data package of the current voltage value, current water supplement times and state of the toilet water tank.

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.

Appearance

Main Features

• Apply SX1276 wireless communication module.
• 2 ER14505 lithium batteries (3.6V / section) in parallel
• Detect the number and status of make-up water of toilet water tank.
• Protection Class IP65
• Compatible with LoRaWANTM Class A
• Frequency hopping spread spectrum
• 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.

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. 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 of f: fail

Fail to join the network| 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 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

Low Voltage Threshold Alarm
Low Voltage| 3.2 V

Data Report

After power on, the device will immediately send a version packet report and a data report including the device battery voltage, the number and status of toilet water tank replenishment.

Default setting

• Max Interval: 0x0E10 (3600s)

• Min Interval: 0x0E10 (3600s) // Every Min Interval will detect the current voltage one time

• Battery Change : 0x01 (0.1v)

• Daily Replenish water Alarm count : 0x0032 (50 times)

• Fault Check Time : 0x012C (300s)

• If there is a special customized order, the setting of the device will change according to customer’s requirements

Fault Alarm

• FaultAlarm is reported as 0, indicating that the single water supplement of the toilet water tank is normal.
• FaultAlarm is reported as 1, indicating that the single water supplement of the toilet water tank is abnormal.

Tank Leak Alarm

• TankLeakAlarm is reported as 0, indicating that the number of water replenishments in the toilet water tank within 24 hours is normal.
• TankLeakAlarm is reported as 1, indicating that the number of water replenishments in the toilet water tank within 24 hours is abnormal.

Replenish water count
Replenishwatercount is the cumulative make-up times of the toilet water tank.
When the device is powered off, clear or issue a command to clear (ClearReplenishwatercountReq)

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.
3. The device reported data parsing please refer to Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver http://cmddoc.netvoxcloud.com/cmddoc

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

Example of Report Data Cmd

FPort：0x06

Version– 1 byte –0x01——the Version of NetvoxLoRaWAN Application Command Version Device Type– 1 byte – Device Type of Device
The device type is listed in Netvox LoRaWAN Application Device type doc Report Type – 1 byte –the presentation of the Nervon Pay Load Data， according the device type Nitrox Pay Load Data– Fixed bytes (Fixed =8bytes)

Tip s

1. Battery Voltage
   • The voltage value is bit 0 ~ bit 6, bit 7=0 is normal voltage, and bit 7=1 is low voltage. Battery=0xA0, binary=1010 0000, if bit 7= 1, it means low voltage.
   • The actual voltage is 0010 0000 = 0x20 = 32, 32*0.1v =3.2v
2. Version Packet
   • When Report Type=0x00 is the version packet, such as 01D4000A0B202302110000, the firmware version is 2023.02.11 3. Data Packet
   • When Report Type=0x01 is data packet.

Device| Device

Type

| Report

Type

| NetvoxPayLoadData
---|---|---|---

R720FLT

|

0xD4

| 0x00| SoftwareVersion(1Byte)

Eg.0x0A—V1.0

| HardwareVersion

(1Byte)

| DateCode

(4Bytes,eg0x20170503)

| Reserved

(2Bytes,fixed 0x00)

0x01

| Battery (1Byte)

unit:0.1V

| Replenish water count

(4Bytes)

| Fault Alarm (1Byte)

0:off 1:on

| Tank Leak Alarm (1Byte)

0x00_noleak0x01_leak

| Reserved (1Byte)

fixed 0x00

Example 1 of uplink: 01D401240000002F000000

• 1st byte (01 ): Version
• 2nd byte(D4 ): Device Type 0xD4 － R720FLT
• 3rd byte (01 ): Report Type
• 4th byte (24 ): Battery, 24 (Hex)=36 (Dec) 36*0.1v=3.6v
• 5th 6th 7th 8th Byte (0000002F): Replenish water count, 2F (Hex)=47 (Dec) 9th byte (00): Fault Alarm, no alarm
• 10th byte (00 ): Tank Leak Alarm, no alarm
• 11th byte (00): Reserved

Example 2 of uplink: 01D4019F00000168010000

• 1st byte (01 ): Version
• 2nd byte(D4 ): DeviceType 0xD4 － R720FLT
• 3rd byte (01): ReportType
• 4th byte (9F ): Battery－3.1V (Low battery), 1F(Hex)=31 (Dec) 31*0.1v=3.1v
• // Battery Bit7 represent low battery Bit6-0 represent battery voltage 5th 6th 7th 8th byte (00000168): Replenish water count－360 times, 168(Hex)=360(Dec) 9th byte (01): Fault Alarm, alarm
• 10th byte (00 ): Tank Leak Alarm, no alarm
• 11th byte (00 ): Reserved

Example of Configure Cmd

FPort：0x07

CmdI D– 1 byte
Device Type– 1 byte – Device Type of Device
Netvox Pay Load Data– vary bytes (Max=9bytes)

Description| Device| Cmd I D| Device Type| Netvox Pay Load Data
---|---|---|---|---
Config Report Reqs|

R720FLT

| 0x01|

0xD4

| Min Time (2Bytes Unit:s)| Max Time (2Bytes Unit’s)| Battery Change (1Byte Unit:0.1v)| Reserved (4Bytes,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)| BatteryChange (1Byte Unit:0.1v)| Reserved (4Bytes,Fixed

0x00)

1. Configure R720 FLT device parameter MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v
   Downlink: 01D4003C003C0100000000 // 3C(Hex)=60(Dec) Device return

   • 81D4000000000000000000 (configuration success)
   • 81D4010000000000000000 (configuration failure)

2. Read R720 FLT device parameter

   • Downlink: 02D4000000000000000000
   • Device return： 82D4003C003C0100000000 (device current parameter)

Description| Device| Cmd

ID

| Device

Type

| NetvoxPayLoadData
---|---|---|---|---
SetFaultCheckTimeReq

(Remain last config when reset to factory)

|

R720FLT

| 0x03|

0xD4

| FalutCheckTime (2Byte,Unit:1s )| Reserved (7Bytes,Fixed 0x00)
SetFault

CheckTimeRsp

| 0x83| Status

(0x00_success)

| Reserved

(8Bytes,Fixed 0x00)

GetFault

CheckTimeReq

| 0x04| Reserved

(9Bytes,Fixed 0x00)

GetFault

CheckTimeRsp

| | 0x84| | FalutCheckTime

(2Byte,Unit:1s )

| Reserved

(7Bytes,Fixed 0x00)

---|---|---|---|---|---
Clear

ReplenishwatercountReq

| 0x05| Reserved

(9Bytes,Fixed 0x00)

Clear

ReplenishwatercountRsp

| 0x85| Status

(0x00_success)

| Reserved

(8Bytes,Fixed 0x00)

SetDailyReplenishwater AlarmcountReq

(Remain last config when

reset to factory)

|

0x06

| DailyReplenishwater Alarmcount(2Byte )| Reserved (7Bytes,Fixed 0x00)
Set Daily Replens dishwater

Alarm count Rasp

| 0x86| Status

(0x00_success)

| Reserved

(8Bytes,Fixed 0x00)

Get Daily Replens dishwater

Alarm count Reqs

| 0x07| Reserved (9Bytes,Fixed 0x00)
Get Daily Replenishwater

Alarm count Rsp

| 0x87| DailyReplenishwater

Alarmcount (2Byte)

| Reserved

(7Bytes,Fixed 0x00)

1. Set fault check time is 180s
   • Downlink : 03D400B400000000000000 // B4(Hex)=180(Dec)
   • Device return
   • 83D4000000000000000000 (configuration success)
   • 83D4010000000000000000 (configuration failure)
2. Clear replenish water count
   • Downlink: 05D4000000000000000000
   • Device return
   • 85D4000000000000000000 (configuration success)
   • 85D4010000000000000000 (configuration failure)

Example 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 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.

Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

1. The device only wakes up and performs data sampling according to Min Time 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 of data variation, button push, or Max Time interval, another cycle of Min Time/Max Time calculation is started.

Installation

Installation Method of Toilet Water Tank Leakage Detection Device

Bracket Installation

• Step1. Open the toilet water tank cover, and put the R720FLT and the bracket into the toilet tank for comparison, find the proper installation position and avoid the water inlet valve, drain valve, and flush button.
• Step2. After confirming the location, put the R720FLT aside and start fixing the bracket first.
• Step3. Adjust the width of the bracket to be slightly smaller than the width of the toilet tank.

(The suction cup of the bracket has one side fixed and non-adjustable, and the other side adjustable)

Adjust the length of the bolt so that the product can stick to the wall of the water tank without loosening, and then lock the nut to fix it.

• Step4. Put the fixed suction cup of the bracket against the side of the toilet tank wall and keep the bracket parallel.

• Step5. Turn the stud of the adjustable suction cup by hand until it cannot be turned.
  (Be careful not to forcefully lock and cause the toilet tank to rupture)

• Step6. Tighten the nut to fix the bracket to ensure that the bracket will not fall and the installation is complete.

R720FLT Device Installation

• Step1. Gently press the flush button to start releasing water until the toilet starts to replenish water, and record the water level at this time, that is, the water replenishment level.
• Step2. When the water supply stops, record the water level at this time, that is, the full water level. Please press the flush button continuously and lightly, instead of pressing it all at once, this is for the convenience of recording when the water tank is replenished.
• Step3. Trim the length of the R720FLT electrode rod, and the tail end must be between the replenishment water level and the full water level.
• Step4. After testing the normal operation of the device, tear off the release paper with double-sided adhesive on the back of the device, and lay it flat on the bracket steel plate.

Replace The Electrode Rods
When the parts of the toilet water tank are aging, resulting in the change of water make-up or full liquid level, and the probe length is insufficient. It is not necessary to purchase a new R720FLT, just remove the old probe, replace it with a new one, and adjust the probe length according to the installation steps.

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 a 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 it is suggested that if the storage period is more than one month from the date of battery production, all the batteries should be activated.

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 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

• Connect a battery to a resistor in parallel
• Keep the connection for 5~8 minutes
• The voltage of the circuit should be ≧3.3, indicating successful activation.

Note
If you buy batteries from other than the above four manufacturers, then the battery activation time, activation current, and required load resistance shall be mainly subject to the announcement of each manufacturer.

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.

Description of Waterproof Grade

1. According to Enclosure Protection Class
   This standard is equivalent to IEC 60529: 2001 Degrees of Protection Provided by Enclosures (IP Code) (English version)

2. The test method of IP65 waterproof grade is : to spray the device in all directions under 12.5L/min water flow for 3min, and the internal electronic function is normal.
   The test method of IP67 waterproof grade is: the device is immersed in 1m deep water for 30min, and the internal electronic function is normal.
   IP65, is dust-proof and prevents damage caused by water from nozzles in all directions from invading electrical appliances. It can be used in the general indoor environment and sheltered outdoor environment. It is not suitable for use in environments with high water pressure, high temperature, and high humidity, such as long time direct sunlight outdoors and possible direct exposure to rainstorms. If it is really necessary to install in harsh environments, it is recommended to add sunscreen and rainproof shields when installing.

References

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