netvox R718PG Wireless Light Sensor User Manual
- June 4, 2024
- netvox
Table of Contents
netvox R718PG Wireless Light Sensor
Introduction
The R718PG is a Wireless Light Sensor for Netvox ClassA type devices based on the LoRaWAN open protocol and is compatible with the LoRaWAN protocol. It can detect illuminance anywhere, ex. sunlight, outdoor area.
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
- Compatible with LoRaWAN protocol.
- Powered by 2 x ER14505 3.6V Lithium AA battery
- Illuminance detection
- IP rating 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
- Improved power management for longer 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.
- Actual range may vary depending on environment.
- Battery life is determined by sensor reporting frequency and other variables.
Set up Instruction
Data Report
- The device will immediately send a version packet report along with an uplink packet including illuminance and battery voltage.
- The device sends data in the default configuration before any configuration is done.
Default setting:
- MaxTime : Max Interval = 15 min = 900s
- MinTime : Min Interval = 15 min = 900s
- BatteryChange: 0x01 (0.1V)
- IlluminanceChange:0x0032 (50 Lux)
- Illuminance detection range:
- 0 ~ 157000 Lux
Note :
- The device report interval will be programmed based on the default firmware which may vary.
- The interval between two reports must be the minimum time.
- Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver http://loraresolver.netvoxcloud.com:8888/page/index to resolve uplink data
Data report configuration and sending period are as following:
Example of Report configuration
- CmdID– 1 byte
- DeviceType– 1 byte – Device Type of Device
- NetvoxPayLoadData– var bytes (Max=9bytes)
Command Configuration:
- MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v、IlluminanceChange = 100 Lux
- Downlink：011E003C003C0100000064 003C(Hex) =60 (Dec) , 64(Hex) =100 (Dec)
- Response：
- 811E000000000000000000 （Configuration success）
- 811E010000000000000000（Configuration failure）
Read Configuration:
- Downlink：021E000000000000000000
- Response： 821E003C003C0100000064 （Current configuration）
Example for MinTime/MaxTime logic:
Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V
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.
- The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect data.
- 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.
- 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.
- 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.
Installation
This product comes with waterproof function. When using it, the back of it can be adsorbed on the iron surface, or the two ends can be fixed to the wall with screws.
- Light Sensor（R718PG）has a built-in magnet (see Figure 1 below),When installed, the back of it can be adsorbed on the iron surface, or the two ends can be fixed to the wall with screws (should be purchased) to secure the unit to a wall or other surface (see Figure 2 below).
Note Do not install the device in a metal shielded box or in an environment with other electrical equipment around it to avoid affecting the wireless transmission of the device.
- Compare the illumination value detected by the illumination sensor with the set illumination value. The detected value exceeds the set value (default 50 Lux), the currently detected illumination value is sent.
Light Sensor (R718PG) is suitable for the following scenarios:
- Family
- School
- Storage room
- Hospital
- Bar
- Stairs
- Agricultural greenhouse
To detect the illumination value.
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 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.
ER14505 Battery Passivation:
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
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