netvox R311CA User manual

Model：R311CA
Wireless 2-Input Dry Contact Interface
Wireless 2-Input
Dry Contact Interface
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................................................................................................................................................................8
7. Important Maintenance Instruction..........................................................................................................................8

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1. Introduction
The R311CA is a 2-input dry contact detection device for Netvox ClassAtype devices based on the LoRaWAN open protocol and
is compatible with the LoRaWAN protocol. When any dry contact of the R311CAdetects a change, the R311CA sends a message
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.

3
2. Appearance
3. Main Features
Compatible with LoRaWAN
2 x 3V CR2450 button battery power supply
Detectable voltage value and dry contact status
Simple operation and setting
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
Battery Life:
Please refer to web: http://www.netvox.com.tw/electric/electric_calc.html
At this website, users can find battery life time for variety models at different configurations.
1.Actual range may vary depending on environment.
2. Battery life is determined by sensor reporting frequency and other variables.
Indicator
Function Key

4
4. Set up Instruction
On/Off
Power on Insert batteries. (users may need a flat blade 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 the function key 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 testi
ng 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
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 ac
cording 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:
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)
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 dry contact status and
battery voltage.
Data will be reported by default setting before any configuration.
Default setting:
Maximum Time: 3600s
Minimum Time: 3600s (Detect the current voltage value every 3600s by default setting)
Battery Change: 0x01 (0.1V)
R311CA status:
When the R311CA status changes, it will send a warning report.
Dry contact open: 1
Dry contact close: 0
The reported data is decoded by the Netvox LoRaWAN Application Command document and
http://loraresolver.netvoxcloud.com:8888/page/index

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(1)Command Configuration:
MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v
Downlink：014C003C003C0100000000 003C(Hex) = 60(Dec)
Response：
814C000000000000000000 (Configuration success)
814C010000000000000000 (Configuration failure)
(2)Read Configuration:
Downlink：024C000000000000000000
Response：
824C003C003C0100000000（Current configuration）
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.
Description Device CmdID Device
Type NetvoxPayLoadData
Config
ReportReq
R311CA
0x01
0x4C
MinTime
(2bytes Unit:s) MaxTime (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)
Battery
Change
(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 1H 40th M 1H 55th M 2H 10th M
Note:
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.
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
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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6. Installation
(1) This product does not have a waterproof function. After the screening is completed, please place it indoors.
(2) Dust in the installation position of the equipment needs to be wiped clean and then affixed to the equipment.
(3) 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.