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  • R718PE-Wireless Top Mounted
    Ultrasonic Liquid Level Sensor

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R718PE-Wireless Top Mounted
Ultrasonic Liquid Level Sensor

   

R718PE is a wireless communication device that uses ultrasound to detect the distance between the device and the detected object. The medium the device detects is the air, so the detected object can be any liquid or solid that has a flat and horizontal surface, water level for example. The main body and the sensor of R718PE communicates via the UART serial port, and the detected data can be transmitted via LoRa communication.

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R718PE is a wireless communication device that uses ultrasound to detect the distance between the device and the detected object. The medium the device detects is the air, so the detected object can be any liquid or solid that has a flat and horizontal surface, water level for example. The main body and the sensor of R718PE communicates via the UART serial port, and the detected data can be transmitted via LoRa communication.

  • • SX1276 wireless communication module  
  • • 2 ER14505 battery AA SIZE (3.6V / section) in parallel
  • • Main body: IP65/IP67(optional); ultrasonic sensor: IP67
  • • UART Serial communication
  • • Magnetic base
  • • Compatible with LoRaWANTM Class A 
  • • Frequency-hopping spread spectrum technology (FHSS)       
  • User can configure setting, read data and send alert SMS, E-mail, etc. through third-party platforms that confirm LoRaWAN V1.0.2 protocol
Applicable to third-party platforms: Actility / ThingPark / TTN / MyDevices / Cayenne
Electric:

Power supply

2 ER14505 lithium batteries
(3.6V, 2400mAh / section) in parallel

Battery life

3 years
(conditions: ambient temperature 25°C, reports once every 15 minutes,
txpower = 20dBm, LoRa spreading factor SF = 10)

Standby current

20uA

Wake-up current

6.3mA @3.3V

Low battery alarm

3.2V

RF receiving current

11mA@3.3V

RF emission current

120mA@3.3V

Measurement Range

0.25m to 8m

Blind Zone

0m to 0.25m

Note: The electrical specifications may vary depending on the battery voltage.


Frequency:

Frequency range

863MHz-928MHz 470MHz-510MHz

Power output

US915   20dbm
AS923   16dbm
AU915   20dbm
CN470   19.15dbm
EU868   16dbm
KR920   14dbm
IN865    20dbm

Receiving sensitivity

-136dBm
(LoRa, Spreading Factor=12, Bit Rate = 293bps)
-121dBm
( FSK, Frequency deviation=5kHz, Bit Rate=1.2kbps)

Antenna type

Built-in antenna

Communication distance

10km (The actual distance depends on the environment.

Data transfer rate

0.3kbps to 50kbps

Modulation

LoRa/FSK (Note: Please choose one modulation method.)

Supportable LoRaWAN band

EU863-870, US902-928, AU915-928, KR920-923, AS923, CN470-510
(Note: optional, to be configured before shipment)


Physical:

Dimensions

112mm (L) x 88.19mm (W) x 32mm (H)

Weight

0.24kg (including batteries)

Operating temperature range

-15℃ to 55℃

Operating humidity range

<90% RH (no condense)

Storage temperature range

-25℃ to 70℃