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ROVYNEL10 · 10% off eligible monitors for eligible first-time customers. Once/customer. Terms apply.

Manufacturer product image. Screen and app values are illustrative, not live data.

Standalone RS485 probe

8-in-1 RS485 Digital Water Quality Probe for pH, ORP, EC, TDS, Salinity, SG & Temperature

For a water-monitoring integration with a compatible host. Choose by electrical and protocol requirements, not reading count alone.

$89.00

USD · Probe only

Available

Standalone digital water-quality probe. A compatible host is required.

DC 5–24 V power. No display, WiFi, app or gateway included. Confirm protocol, address, registers and scaling; Modbus compatibility is not established.

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Confirm your host before ordering

Probe → RS485 A/B → Compatible host

Confirm compatibility with support →

Shipping and taxes calculated at checkout. Return requests within 30 days of delivery; support approval required before mailing.

Questions before purchase? Contact support →

Listed parameters

Know exactly what you are measuring.

Units explain the parameter, not an accuracy, range or safety claim. Compare with the unit and temperature reference shown by your exact device.

Listed parameters
Water temperatureTemperature of the water°C / °F display reference
pHAcidity / alkalinitypH
ECElectrical conductivityµS/cm or mS/cm
TDSTotal dissolved solids estimateppm / device-specific scale
ORPOxidation–reduction potentialmV
Salinity · pptSalinity outputppt
Salinity · %Salinity output%
Specific gravityDensity relative to a referenceSG / temperature reference matters

DC 5–24 V power. No display, WiFi, app or gateway included. Confirm protocol, address, registers and scaling; Modbus compatibility is not established.

Use the units and reference on your exact model. No ammonia, nitrite or nitrate measurements; not a drinking-water safety test.

Connection architecture

Understand every stage of the connection.

  1. 01Probe
  2. 02RS485 A/B
  3. 03Compatible host

What you are buying

Standalone digital water-quality probe. A compatible host is required.

Important scope

DC 5–24 V power. No display, WiFi, app or gateway included. Confirm protocol, address, registers and scaling; Modbus compatibility is not established.

Get a compatibility answer, not a guess.

Send the exact host/controller model and connector or wiring photos. Confirm power, protocol and the matching guide before connection.

Request compatibility guidance

Resources / your exact model

Start with the right guide.

Set up

Wire power and RS485 A/B to a compatible controller, verify communication settings, then calibrate each supported water channel according to the probe manual.

Open model-specific support →

Calibration & reference

Use the model-specific calibration sequence and supplied materials. Do not apply another model’s targets or sequence.

Open the matching guide →

Care & troubleshooting

Check placement, units and recent calibration. Follow model-specific cleaning, handling and storage guidance.

Open model-specific support →
Read the online user guide →

Questions, answered

Clarity before you buy.

Is this a complete WiFi monitor?

No. It is a standalone probe; display, WiFi, app and gateway are not included. A compatible host is required.

Does RS485 mean it will work with any controller?

No. Confirm protocol, address, registers and scaling as well as power, polarity and A/B wiring. Modbus support is not established.

Why are there eight outputs?

Salinity is listed in ppt and %. These are two unit outputs, not two additional chemical sensors.

Customer experience

Share what you learned.

No customer reviews published yet

There is no published rating or average to show. Explore the device guide or share your own experience for review.

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Before and after purchase

A clear next step.

A model-specific answer

Contact support with your exact model, order reference and setup details.

View details →

Shipping without guesswork

Usually 1–3 business days to process after payment, not delivery time. Destination eligibility and shipping costs at checkout.

View details →

Returns with guidance

Request within 30 days of delivery. Approval is required before mailing. Contact within 7 days for damage, defects or wrong items.

View details →

Different environments / different systems

Not every water monitor is a pool monitor.

Rovynel 8-in-1 LoRa smart pool water monitor with floating probe and display

Complete monitor

Pool LoRa • 8-in-1

$189.00

pH · Free available chlorine · ORP · Salinity · TDS · EC · Specific gravity · Water temperature

RVN-WQ8-LORA

View device
RS485 digital probe$89.00

Product help

Support