Netvox Wireless 2-Input 0-5V ADC Sampling Interface - R718IA2 is designed for a variety of resistive bridge-sensing applications like pressure, temperature,and level-sensing applications. It can also support other applications, weight scale and force-sensing applications that use strain gauge load cells, and other general resistive bridge signal-conditioning applications.

Principle of Operation

This device can be connected to an ADC sampling interface device. Bare line black is the ground line; red one is the ADC sampling interface line, and the ADC sampling voltage range is 0-5V, which uses the SX1276 wireless communication module.

Example Applications

Battery Health
Voltage Measurement
Transducer Measurement
Machinery
Electrical Motors
Weight Scale and Force-sensing
Pressure, Temperature, Level-sensing Applications
And many ..

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	26uA
Wake up Mode	6.3mA @ 3.3V
Low Voltage Threshold	3.2V
Tx Current	120mA/3.0V
Rx Current	11mA @3.0V

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

ADC Sampling Characteristic

ADC Sampling Voltage Range	0-5V
Resolution	12 digits
ADC Conversion Rate	1.14 Msps
External Cable Length	1m

Physical

Dimension	L:112mmW:65mmH:32mm
Weight	150g
Operating Temperature	-40℃ ～ 55℃
Environment Humidity Range	<90% RH (No condensation)
Storage Temperature	-40℃ ～ 85℃

2-wire System Example Diagram (for wiring reference)

3-wire System Example Diagram (for wiring reference)

Datasheet:

R718IA2.pdf

User manual:

R718IA2_UG.pdf

Battery Calculator:

Netvox Battery Calculator

Netvox LoRa Command Resolver:

LoRa Command Resolver

R718IA2 - Netvox LoRaWan Wireless 2-Input 0-5V ADC Sampling Interface