R718B2 Series Wireless 2-Gang Temperature Sensor Wireless 2-Gang Temperature Sensor R718B2 Series 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.
Table of Content 1. Introduction ...................................................................................................................................................................... 2 2. Appearance ....................................................................................................................................................................... 2 3. Main Features .............................................................................................................
1. Introduction R718B2 series is a Wireless 2-Gang Resistance Temperature Detector for Netvox ClassA type devices based on the LoRaWAN open protocol and is compatible with the LoRaWAN protocol. R718B2 connects two external resistance temperature detectors (PT1000) to measures the temperature. LoRa Wireless Technology: LoRa is a wireless communication technology dedicated to long distance and low power consumption.
R718B250 Round head probe R718B251 Needle probe R718B222 Absorption probe 3. Main Features Adopt SX1276 LoRa wireless communication module. 2 x ER14505 lithium batteries in parallel. PT1000 Platinum resistance temperature sensor detection. The base is attached with a magnet that can be attached to a ferromagnetic material object.
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 green indicator flashes for 20 times. Power off Remove Batteries. 1. Remove and insert the battery; the device is at off state by default.
5. Data Report The device will immediately send a version packet report along with an uplink packet including temperature1, temperature2 and battery voltage. The device sends data in the default configuration before any configuration is done. Default setting: Max Interval: 0x0384 (900s) Min Interval: 0x0384 (900s) BatteryChange: 0x01 (0.1V) TemperatureChange:0x0064 (10°C) Note: The device report interval will be programmed based on the default firmware which may vary.
Tips 1. Battery Voltage: The voltage value is bit 0 ~ bit 6, bit 7=0 is normal voltage, and bit 7=1 is low voltage. Battery=0xA0, binary=1010 0000, if bit 7= 1, it means low voltage. The actual voltage is 0010 0000 = 0x20 = 32, 32*0.1v =3.2v 2. Version Packet: When Report Type=0x00 is the version packet, such as 0114000A0B202005200000, the firmware version is 2020.05.20 3. Data Packet: When Report Type=0x01 is data packet. 4.
5.2 Example of Report configuration 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 Description Device CmdID NetvoxPayLoadData Type ConfigReport MinTime (2bytes Unit:s) 0x01 Req ConfigReport BatteryChange (1byte Unit:0.1v) TemperatureChange (2byte Unit:0.
Note: MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange value. Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V. MaxTime Sleeping(MinTime) sleeping sleeping 15th M 0H 30th M sleeping 45th M 1H 2H 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 3.6V 3.6V 3.
6. 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. 1. The Wireless 2-Gang Temperature Sensor (R718B2) has a 2. When R718B2 is compared with the last reported built-in magnet (see Figure 1 below). When installed, it can values, the temperature change is exceeded 0.
7. 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.
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