NETVOX Wireless Sensor R718PB15A is a ClassA type device based on the LoRaWAN protocol housed in a Cylinder Enclosure, it will be good to embed the unit in the soil.

The R718PB15A connected to a RS-ECTH-N01 soil sensor to report the temperature, conductivity and soil moisture collected by the sensor to the corresponding gateway

Principle of Operation

NETVOX Wireless Temperature Sensor outputs the ambient temperature in degrees Celsius. It is programmed to sleep for a user-given time interval (heartbeat) and then wakeup. To stay within the abilities of the processor, the temperature is computed off a data table provided by the manufacturer.

Example Applications

Soil moisture content detection
Soil temperature detection
Soil conductivity
particular suitable for Golf club grass monitoring.
Other

Features of NETVOX Sensors

• Wireless range of 10 km *

• LoRaWANTM Class A compatible

• Frequency Hopping Spread Spectrum (FHSS)

• Improved interference immunity

• Improved power management for longer battery life

• Encrypt-RF™ Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)

• Battery Life* :

5 years (Conditions: ambient temperature 25 °C, 20 triggers/day, txpower = 20dBm, LoRa spreading factor SF = 10)

• Over-the-air updates (future)

• Third-Party online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email (optional)

• Available third-party platform: Actility/ThingPark, TTN, MyDevices/Cayenne

• R718X series carry magnets which can be attached to ferromagnetic materials and objects

*Actual range may vary depending on environment.

*Battery life is determined by sensor reporting frequency and other variables

Technical Specifications

Input Power	2 x 3.6V ER14505 AA lithium batteries
Sleeping Mode	36uA
Wake up Mode	6.3mA @ 3.3V
Low Voltage Threshold	3.2V
Tx Current	120mA/3.0V
Rx Current	11mA @3.0V
Battery Life	3.4 years (Conditions: ambient temperature 25 °C, 15 min heartbeats, txpower = 20dBm, LoRa spreading factor SF = 10)

Frequency

Tx Power	19dBm±1dBm
Rx Sensitivity	-136dBm (LoRa，Spreading Factor=12，Bit Rate=293bps ) -121dBm (FSK,Frequency deviation=5kHz, Bit Rate=1.2kbps)
Antenna Type	Build-in antenna
Communication Range	Build-in antenna
Data Transfer Rate	0.3kbps～50kbps
Spread Technique	LoRa/FSK
Available Frequency	EU863-870，US902-928，AU915-928， KR920-923，AS923，CN470-510 Configured before shipment

RS-ECTH-N01 Sensor

Rated power Supply	3.6VDC-15VDC
Soil temperature resolution	0.1 ° C
Soil Temperature Measurement Accuracy	±0.5°C
Soil temperature range	-40~80°C
Soil Moisture Content Resolution	0.03% within 0-50%, 1% within 50-100%
Soil moisture content accuracy	2% within 0-50%, 3% within 50-100%;
Soil water component	0-100%
Soil moisture sensing range	The Sensing range of the Sensor is approximately 20 cm in radius, ie water penetration within a radius of 20 cm, and the soil moisture percentage will vary significantly.
Conductivity resolution	10us/cm in 0-10000us/cm; 50us/cm in 100000-20000us/cm
Conductivity accuracy	±3% in the range of 0-10000us/cm; ±5% in the range of 10000-20000us/cm
Conductivity range	Range: 0-20000us/cm

Physical

Dimension	L:112mmW:65mmH:32mm Sensor cover size: D: 16mm*L: 34.5mm,
Weight	160g
Operating Temperature	-20℃ ～ 55℃
Environment Humidity Range	<90% RH (No condensation)
Storage Temperature	-40℃ ～ 85℃

Datasheet:

R718PB15A.pdf

User manual:

R 718PB15A_UG.pdf

Battery Calculator:

Netvox Battery Calculator

Netvox LoRa Command Resolver:

LoRa Command Resolver

R718PB15A - Netvox LoRaWan Soil Volume Water Content \Temperature \Electrical Conductivity in cylinder enclosure