netvox R311W User manual

Model：R311W
Wireless 2-Gang Water Leak Detector
Wireless 2-Gang Water Leak Detector
R311W
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..........................................................................................................................................................3
4. Set up Instruction ....................................................................................................................................................4
5. Data Report .............................................................................................................................................................5
6. Installation...............................................................................................................................................................9
7. Important Maintenance Instruction.......................................................................................................................10

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1. Introduction
Wireless 2-Gang Water Leak Detector (R311W) is a LoRaWAN device compatible with LoRaWAN protocol (ClassA). When the
R311W sensor detects a leak, it will send an alarm message to the gateway. When the sensor detects no leaks, it will send a
message that shows no leak to the gateway.
LoRa Wireless Technology:
LoRa is a wireless communication technology famous for its long-distance transmission and low power consumption. Compared
with other communication methods, LoRa spread spectrum modulation technique greatly extend the communication distance. It
can be widely used in any use case that requires long-distance and low-data wireless communications. For example, automatic
meter reading, building automation equipment, wireless security systems, industrial monitoring. It has features like small size,
low power consumption, long transmission distance, strong 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
3. Main Features
Compatible with LoRaWAN
2 sections of 3V CR2450 button battery power supply
Detectable voltage and water leak status
Simple operation and setting
Compatible with LoRaWANTM Class A
Frequency hopping spread spectrum technology
Configuration parameters can be configured through third-party software platforms, data can be read and alarms can be set via
SMS text and email (optional)
Available third-party platform: Actility / ThingPark, TTN, MyDevices/Cayenne
Low power consumption and long battery life
Indicator
Water Leak Sensor
Function Key

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4.Set up Instruction
On/Off
Power on Insert batteries. (users may need a screwdriver to open);
Insert two sections of 3V CR2450 button batteries and close the battery cover.)
Turn on Press any function key till green and red indicator flashes once.
Turn off (Restore to factory setting) Press and hold both function keys for 5 seconds till green indicator flashes for 20 times.
Power off Remove Batteries.
Note:
1. Remove and insert the battery; the device memorizes previous on/off state by default.
2.
On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor
inductance and other energy storage components.
3. Press any function key and insert batteries at the same time; it will enter engineer testing
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
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 with 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
2.4V

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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 battery voltage, leak status
The device sends data in the default configuration before any configuration is done.
Default setting:
Maximum time: 3600s
Minimum time: 3600s
Battery: 0x01 (0.1V)
R311W sensor is triggered:
When the R311W status changes, it will send warning report.
No water leak:0
Water leak:1
Note:
The reported data is decoded by the Netvox LoRaWAN Application Command document and
http://loraresolver.netvoxcloud.com:8888/page/index

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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)
（1）Configure R311W device parameters:
MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v
Downlink：0106003C003C0100000000 003C(Hex) = 60(Dec)
Device returns：
8106000000000000000000（Configuration success）
8106010000000000000000（Configuration failed）
（2）Read R311W device parameters:
Downlink：0206000000000000000000
Device returns：
8206003C003C0100000000（Current configuration）
Description Device Cmd
ID
Device
Type NetvoxPayLoadData
Config
ReportReq
R311W
0x01
0x06
MinTime
(2bytes Unit:s)
MaxTime
(2bytes Unit:s)
BatteryChange
(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)

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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
Max Time Max Time
Sleeping (Min Time) Sleeping (Min Time)
1H 2H 3H
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:
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
REPORTS 2.8V
Wakes up and
collects data
REPORT 2.8V
Wakes up and
collects data
REPORTS
2.8V
Wakes up and
collects data
2.7V |2.7-2.8|=0.1
REPORTS 2.7V
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data 2.7V
Does not report
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data
REPORTS
2.7V
Wake up and
collects data
REPORTS 2.8V
Wakes up and
collects data
REPORTS 2.8V
Wakes up and
collects data
REPORTS 2.8V
Wakes up and
collects data
2.8V
Does not report
Users push the button,
REPORTS 2.7V.
Recalculate MaxTime.
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
2.8V
Does not report

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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 change value 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.

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6. Installation
This product does not have a waterproof function.After the screening is completed, please place it indoors.
1. Remove the 3M glue on the back of the magnet body
and attach the body to the door frame (please do not stick
it on the rough door to avoid falling off after using the
device for a long time).
Note:
Wipe the door clean before installation to avoid dust
on the door and affect the adhesion of the device.
Do not install the device in a metal shielded box or
other electrical equipment around it to avoid affecting
the wireless transmission of the device.
2. Remove the 3M glue from the bottom of the sensor
probe and attach it to a flat ground position where it may
accumulate water leaks. As shown in the enlarged view
on the right.
The figure shows that the water immersion sensor (R311W) is
used in bathing rooms where there is a possibility of water
leakage in the pipeline.
It can also be applied to the following scenarios:
Data center and computer room
Document storage center
Basement leak monitoring
Water pipe leak detection
Bilge monitoring
The device is designed to detect water leaks and is not suitable
for detecting hazardous chemicals, solvents, oils, fuels, strong
acids or other corrosive liquids.
3.When the sensor probe detects a leak, the flood sensor
device will send an "alarm" message.
Remove the probe from the accumulated leak location;
dry the remaining water inside the sensor. The device is
back to a "normal" state, and send a "normal" status
message.

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(2) The battery installation method is shown in the figure below (battery with "+" facing outward).
Note: To install the battery, use a screwdriver or similar tool to assist in opening the battery cover.
7. 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.