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netvox R720C User Manual

Wireless air pressure and temperature sensor
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Model：R720C
Wireless Air Pressure and Temperature Sensor
Wireless Air Pressure
and
Temperature Sensor
R720C
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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Summary of Contents for netvox R720C

  • Page 1 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.

  • Page 2: Table Of Contents

    Table of Content 1. Introduction ................................2 2. Appearance ................................2 3. Main Feature ................................3 4. Set Up Instruction ..............................4 5. Data Report ................................5 6. Information about Battery Passivation ......................... 11 7. Important Maintenance Instruction ........................12...

  • Page 3: Introduction

    1. Introduction R720C is a device for detecting air pressure and temperature that is a ClassA device based on the LoRaWAN open protocol of Netvox, and is compatible with the LoRaWAN protocol. 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.

  • Page 4: Main Feature

     Applicable to third-party platforms: Actility/ThingPark, TTN, MyDevices/Cayenne  Low power consumption and long battery life Note: Battery life is determined by the sensor reporting frequency and other variables, please refer to http://www.netvox.com.tw/electric/electric_calc.html On this website, users can find battery lifetime for varied models at different configurations.

  • Page 5: Set Up Instruction

    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 flashes once. Turn off (Restore to factory setting) Press and hold the function key for 5 seconds till the green indicator flashes 20 times. Power off Remove Batteries.

  • Page 6: Data Report

    3.The interval between two reports must be the minimum time (If there is special customized shipment, the setting is changed according to customer requirements.) The data parsing reported by the device is referenced by the Netvox LoraWAN Application Command document and http://www.netvox.com.cn:8888/page/index Data report configuration and sending period are as following: Current Change＜...
  • Page 7 (2bytes Unit: s) (1byte Unit:0.1v) (2byte (2byte Unit:0.01℃) Unit:0.1hPa) (1) Configure R720C device parameter MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v、 TemperatureChange=1℃(100*0.01℃), AirPressChange=1hPa (10*0.1hPa) Downlink: 0170003C003C010064000A Device return: Uplink: 8170000000000000000000 (configuration success) Uplink: 8170010000000000000000 (configuration failure) (2) Read R720C device parameter...
  • Page 8 Version– 1 bytes –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)
  • Page 9 Air Press Sensor 0x35 The following example is 0x35 atmospheric pressure of GlobalCalibrateCmd. (1) If the R720C detects is 1000 hPa and the actual atmospheric pressure is 999 hPa, it means the calibration we want to make is -1hPa. Configure R720C device parameter Channel = 01、Multiplier = 000A 、Divisor = 0000、DeltValue = FFFF(-1)
  • Page 10 (2) Read R720C device parameter Downlink: 0235010000000000000000 Device return: Uplink: 823501000A0000FFFF0000 (device current parameter) (3) Clear R720C device parameter Downlink: 0300000000000000000000 Device return: Uplink: 8300000000000000000000 Note: 1. When Multiplier is not 1, Calibration value = DeltValue*Multiplier. 2. When Divisor is not 1, Calibration value = DeltValue/Divisor.
  • Page 11 Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V. MaxTime Sleeping(MinTime) sleeping sleeping sleeping Wakes up and Wakes up and Wakes up and Wakes up and Wakes up and collects data collects data collects data collects data collects data REPORT 3.6V...

  • Page 12: Information About Battery Passivation

    6. 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.

  • Page 13: Important Maintenance Instruction

    7.Important Maintenance Instruction Kindly pay attention to the following in order to achieve the best maintenance of the product: • 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. •...