netvox R311CA User manual

Model：R311CA
Wireless Dry Contact Sensors
Wireless Dry Contact Sensor
R311CA
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.

1
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 ..........................................................................11

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1. Introduction
The R311CA is a dry contact detection device for Netvox ClassAtype devices based on the LoRaWAN open protocol and is
compatible with LoRaWAN protocol. When any dry contact of R311CA detects a change, R311CA will send a message to the
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 and 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
3. Main Features
2 x 3V CR2450 button batteries
Compatible with LoRaWAN
Adopt SX1276 wireless communication module
Dry contact detection
Frequency hopping spread spectrum technology
Configuring parameters and reading data via the third-party software platforms, and set alarms via SMS text and email
(optional)
Applicable to the third-party platforms:Actility/ ThingPark/ TTN/ MyDevices/ Cayenne
Note: Battery life is determined by sensor reporting frequency and other variables.
Please refer to web: http://www.netvox.com.tw/electric/electric_calc.html
In this website, users can find battery lifetime for various models at different configurations.
Function Key
Indicator

4
4.Set up Instruction
On/Off
Power on
Insert batteries (users may need a flat screwdriver or other tools to open the battery cover)
Insert two sections 3V CR2450 button batteries and close the battery cover.
Note: Require 2 button batteries to supply power at the same time.
Turn on Press any function key until the red and green indicator lights flash at the same time:
success
Turn off (Restore to original setting)
Press simultaneously and hold two function keys for 5 seconds, and then the green
indicator will flash continuously. After release function keys, the green indicator flashes 20
times and the device will turn off automatically.
Power off Remove Batteries
Note:
1. Remove and insert the battery, and 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. If press any function key and insert batteries at the same time, it will enter engineer
testing mode.
Network Joining
Never join the network
Turn on the device to search the network to join.
The green indicator stays on for 5 seconds: success
The green indicator remains off: fail
Had joined the network
(Not in the original setting)
Turn on the device to search the previous network to join.
The green indicator stays on for 5 seconds: success
The green indicator remains off: fail
Fail to join the network Suggest checking device verification on gateway or consulting your platform server
provider if the device fails to join the network.
Function Key
Press and hold for 5 seconds
Restore to the original 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 sends a report
The device is not in the network: the green indicator remains off

5
Sleeping Mode
The device is turn on
and join
in the network
Sleeping period: Min Interval.
When the reportchange exceeds the default or the state of the device changes: send a data report
according to Min Interval.
Low Voltage Warning
Low Voltage 2.4V
*Suggest removing batteries if the device is not used to save power.
5. Data Report
After power on, the device will immediately send a version packet report and a data report including temperature, humidity,
and voltage.
The device sends data according to the default configuration before any other configuring.
Default setting:
Report MaxTime：1 H (3600s)
Report MinTime：1 H (3600s) (Default: Every Min Interval will detect the state of the dry contact one time)
BatteryVoltageChange：0x01 (0.1V)
Triggering the dry contact:
When the dry contact detects the state changing, the report will be sent immediately.
Open: 1
Close: 0
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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5.1 Example of Report Data Cmd
FPort：0x06
Bytes 1 1 1 Var(Fix=8 Bytes)
Version DeviceType ReportType NetvoxPayLoadData
Version– 1 byte –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)
Uplink: 014C011C01000000000000
1st byte (01): Version
2nd byte (4C): DeviceType 0x4C －R311CA (R313CA)
3rd byte (01): ReportType
4th byte (1C): Battery－2.8v , 1C Hex=28 Dec 28*0.1v=2.8v
5th byte (01): Alarm
6th byte (00): No Alarm
7th ~ 11th byte (0000000000): Reserved
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)
Device Device
Type
Report
Type NetvoxPayLoadData
R311CA 0x4C 0x01 Battery
(1Byte, unit:0.1V)
Status1
(1Byte 0:off 1:on)
Status2
(1Byte 0:off 1:on)
Reserved
(5Bytes, fixed 0x00)

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(1)Configure R311CA device parameter MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v
Downlink：014C003C003C0100000000
Device return：
814C000000000000000000 (configuration success)
814C010000000000000000 (configuration failure)
(2)Read R311CA device parameter
Downlink：024C000000000000000000
Device return：
824C003C003C0100000000 (device current parameter)
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 BtteryVoltageChange
value.
Description Device CmdID Device
Type NetvoxPayLoadData
ConfigReport
Req
R311CA
0x01
0x4C
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)
ReadConfigR
eportReq 0x02 Reserved (9Bytes, Fixed 0x00)
ReadConfigR
eportRsp 0x82 MinTime (2bytes Unit:s)
MaxTime
(2bytes Unit:s)
BatteryChange
(1byte Unit:0.1v)
Reserved
(4Bytes,Fixed
0x00)
Wake up and collects data
REPORTS 2.8V
Wakes up and collects data
REPORTS 2.8V
Wakes up and collects data
REPORTS 2.8V

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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
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 collected data is compared with the last reported data. If the variation of the data is greater than the value of
ReportableChange, the device will report according to MinTime interval. If the data variation is not greater than the last
reported data, the device will report according to MaxTime interval.
(3) We do not recommend setting the MinTime Interval value too low. If the MinTime Interval is too low, the device will wake
up frequently and the battery will be drained soon.
(4) When the device sends a report, no matter the data changes, button is pushed or MaxTime interval comes, another cycle of
MinTime / MaxTime calculation starts.
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
REPORT 2.8V
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
REPORT 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
Users push the button,
REPORTS 2.7V.
Recalculate MaxTime.
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
REPORT 2.8V
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
REPORT 2.7V

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6. Installation
1. Remove the 3M release paper on the back of the device and
attach the device to the smooth wall (please do not stick it to
the rough wall to avoid falling off after a longtime usage).
Note:

Wipe the wall surface before installation to avoid dust on
the wall surface that affect the effect of the paste.

Do not install the device in a metal shielded box or other
electrical e
quipment around it to avoid affecting the
wireless transmission of the device.
The dry contact sensor (R311CA) can be applied to the
following scenes:
Various switches and buttons
The output of the dry contact of the sensor
The operating state of the device
Monitoring the condition of doors and windows in home
or in business
2.When the device detects the state of dry contact changing,
the data report will be sent immediately.
3.If detect the battery voltage exceeding the value of the
variation at MinTime, the report will be sent immediately.
4.No matter the state of the dry contact changes, the data
report must be sent at MaxTime.
Note:
When the dry contact is close, the state of the data is “0”.
When the dry contact is open, the state of that is “1”.

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Fig. Diagram of connecting with the wired smoke sensor
R311CA
External power supply
Wired smoke sensor
External power supply

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7. 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.