netvox R718J User manual

Model：R718J
Wireless Dry Contact Interface
Wireless Dry Contact Interface
R718J
User Manual

1
Table of Content
1. Introduction.................................................................................................................2
2.Appearance..................................................................................................................2
3. Product Property.........................................................................................................3
4. Set up Instruction........................................................................................................4
5. Data Report.................................................................................................................5
6. Installation ..................................................................................................................9
7. Important Maintenance Instruction ..........................................................................11

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1. Introduction
R718J is a ClassA type external dry contact device based on LoRaWAN open protocol of Netvox. It
can externally connect various switches, buttons, relays and reed switch output. It can detect the
closing or disconnecting signal of dry contact and is compatible with LoRaWAN protocol.
LoRa wireless technology:
LoRa is a wireless communication technology dedicated to long-distance low-power consumption.
Its spread-spectrum modulation method greatly increases the communication distance compared
with other communication methods, and can be widely used in long-distance low-rate IoT wireless
communication fields in various occasions. Such as automatic meter reading, building automation
equipment, wireless security systems, industrial monitoring and control. It has the characteristics of
small size, low power consumption, long transmission distance and strong anti-interference ability.
LoRaWAN:
LoRaWAN defines an end-to-end standard specification using LoRa technology to ensure
interoperability between devices and gateways from different vendors.
2. Appearance

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3. Product Property
Apply SX1276 wireless communication module
2 ER14505 lithium batteries (3.6V / section) parallel power supply
Dry contact detection
The base is attached with a magnet that can be attached to a ferromagnetic material object
Protection class IP65/IP67 (Optional)
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

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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 flashe
s 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 is at 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. Five seconds after power on, the device will be in engineering test 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 according to Min Interval.

5
Low Voltage Warning
Low Voltage 3.2V
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
When the device is turned on, it will immediately send a version package.
Data will be reported once per hour by default setting.
Maximum time: 3600s
Minimum time: 3600s (Detect the current voltage value every 3600s by default setting)
Default reportchange:
Battery ---- 0x01 (0.1V)
Dry contact detection trigger:
When the dry contact is connected, the data status bit is “1”.
When the dry contact is disconnected, the data status bit is “0”.
Note:
The device send data cycle depends on real burning configuration.
The interval between two reports must be the minimum interval.

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Example of ConfigureCmd
FPort：0x07
Bytes 1 1 Var(Fix =9 Bytes)
CmdID DeviceType NetvoxPayLoadData
CmdID– 1 bytes
DeviceType– 1 byte – Device Type of Device
NetvoxPayLoadData– var bytes (Max=9bytes)
Description Device
Cmd
ID
Device
Type NetvoxPayLoadData
ConfigReport
Req
R718J
0x01
0x21
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)
ReadConfigRe
portReq 0x02 Reserved
(9Bytes,Fixed 0x00)
ReadConfigRe
portRsp 0x82 MinTime
(2bytes Unit:s) MaxTime (2bytes Unit:s) BatteryChange (1byte Unit:0.1v)
Reserved
(4Bytes,Fixed
0x00)
(1) Configure device parameters MinTime = 1min, MaxTime = 1min, BatteryChange = 0.1v
Downlink: 0121003C003C0100000000 003C(Hex) = 60(Dec)
Device returns:
8121000000000000000000 (configuration is successful)
8121010000000000000000 (configuration failed)
(2) Read device parameters
Downlink: 0221000000000000000000
Device returns:
8221003C003C0100000000 (current device parameters)

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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
MaxTime MaxTime
Sleeping(MinTime) Sleeping(MinTime)
Note:
MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration
regardless BtteryVoltageChange 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
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
REPORT 3.6V
Wake up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V
Wakes up and collects data
REPORTS 3.6V
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
REPORT 3.6V

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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 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
3.5V |3.5-3.6|=0.1
REPORTS 3.5V Wakes up and
collects data 3.5V
Does not report
Users push the button,
REPORTS 3.5V.
Recalculate MaxTime.
Wakes up and
collects data
3.6V
Does not report
Wakes up and
collects data
REPORT 3.6V
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

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6. Installation
1. The dry contact sensor (R718J) has a built-in magnet (as
Figure 1 below), which can be attached to the surface of an
iron object during installation, which is convenient and quick.
In order to make the installation firmer, please use screws
(purchased separately) to fix the device to the wall or other
surface. (as Figure 2 below)
Note: Do not install the device in a metal shielded box or in
an environment surrounded by other electrical equipment to
avoid affecting the wireless transmission of the device.
2. After the dry contact sensor detects the change
of the dry contact state, it will report the data
immediately.
3. If the battery voltage is detected that exceeds the
change value during Min Time, the data will be
reported immediately.
4. Whether the state of the dry contact is change, a
piece of data will be reported regularly when the
MaxTime comes.
Note:
When the dry contact is connected, the data
status bit is “1”.
When the dry contact is disconnected, the data
status bit is “0”.
Dry contact sensor (R718J) can be used in the
following scenarios:
Various switches and buttons
Dry contact output of sensor
The operating status of the equipment
State monitoring of doors and windows in home
or business
The occasion is necessary to judge the state of the
sensor through the dry contact signal.
A diagram that the dry contact sensor (R718J) connecting to a wired smoke sensor.
Dry contact sensor
(R718J)
External power
supply
DC24V+
1
Wired smoke sensor
2
3 4
Dry contact
DC24V-

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*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
Note:
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.

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7. Important Maintenance Instruction
Your device is a product of 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 moisture 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 can damage its detachable parts and electronic
components.
• Do not store in excessive heat. High temperatures can shorten the life of electronic devices, destroy
batteries, and deform or melt some plastic parts.
• Do not store in a 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. Rough handling of equipment can destroy internal circuit
boards and delicate structures.
• Do not wash with strong chemicals, detergents or strong detergents.
• Do not apply with paint. Smudges can block debris in detachable parts and affect normal operation.
• Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteries may
also explode.
All of the above suggestions apply equally to your device, battery and accessories. If any device is
not working properly.
Please take it to the nearest authorized service facility for repair.