DODO AQUA — Industrial Online Water Sensors
Seven RS-485 Modbus water sensors: pH, ORP, conductivity/TDS, salinity, free chlorine, level, pressure. IP68, plug-in for DODO LOGGER. Datasheets from DODOTiK.
About the family
DODO AQUA is a family of seven industrial water sensors that all speak the same language: RS-485 Modbus-RTU at 9600 8N1, over a cable that arrives with the GX12 4-pin connector already fitted. One bus, one wiring convention, one set of install habits across every measurand on this page.
The signal conditioning sits inside each probe, so what leaves the sensor is a calibrated digital value rather than a few millivolts that need a separate transmitter and a cable run worth protecting. Every unit is IP68, and the five water-quality probes share a 3/4" NPT body so they mount interchangeably in the same tank boss or flow cell.
The range

DODO AQUA pH
Industrial Online pH Sensor
pH · TemperatureView specifications
DODO AQUA ORP
Online ORP / Redox Potential Sensor
ORP (Redox Potential)View specifications
DODO AQUA EC
Online Conductivity & TDS Sensor
Conductivity · TDS · TemperatureView specifications
DODO AQUA SAL
Inductive Salinity Sensor
Salinity · TemperatureView specifications
DODO AQUA CL
Amperometric Free Chlorine Sensor
Free Chlorine (HClO) · TemperatureView specifications
DODO AQUA LEVEL
Submersible Hydrostatic Water-Level Sensor
Water Level · Hydrostatic HeadView specifications
DODO AQUA PRESSURE
Industrial Line Pressure Transmitter
Gauge PressureView specificationsCompare at a glance
| Order code | Sensor | Measures | Range | Accuracy |
|---|---|---|---|---|
| DA-PH | Industrial Online pH Sensor | pH · Temperature | 0-14 pH | ±0.1 pH |
| DA-ORP | Online ORP / Redox Potential Sensor | ORP (Redox Potential) | −1500 … +1500 mV | ±6 mV |
| DA-EC | Online Conductivity & TDS Sensor | Conductivity · TDS · Temperature | Six ranges - see Ordering information | ±1 % of reading |
| DA-SAL | Inductive Salinity Sensor | Salinity · Temperature | 0-70 PSU | ±1.5 % F.S. |
| DA-CL | Amperometric Free Chlorine Sensor | Free Chlorine (HClO) · Temperature | 0-2.000 mg/L | ±5 % of reading or ±0.05 mg/L |
| DA-LVL | Submersible Hydrostatic Water-Level Sensor | Water Level · Hydrostatic Head | 0-5 m or 0-10 m | ±0.3 % F.S. — ±15 mm (5 m) · ±30 mm (10 m) (±0.2 % F.S. option) |
| DA-PRS | Industrial Line Pressure Transmitter | Gauge Pressure | 0-6, 0-10 or 0-16 bar | ±0.3 % F.S. — ±0.018 / ±0.03 / ±0.048 bar |
Plug Any DODO AQUA sensor into DODO LOGGER and it is already on your phone
No firmware reflash, no driver to write, no backend deployment. The logger self-describes its schema to the platform, so a new sensor appears in the dashboard and in the app on its own.
1 · Plug in
The fitted GX12 4-pin connector screws onto the logger's Modbus RS-485 socket. No stripping, no terminal block, no tools. Up to four sensors per logger.
2 · Select it
Any DODO AQUA sensor is in the logger's no-code sensor library. Pick it in the web interface, assign a slot, and it starts logging.
3 · Logged locally
Every reading to microSD, always on, offline included. CSV download straight off the card.
4 · Live in the cloud
MQTT/TLS to the DODOTiK Platform — live dashboards, full history, alert thresholds, device management.
5 · On a phone
The same readings and alerts in DODOLINK for iOS and Android, for whoever is out in the field rather than at a desk.
Nothing here is lock-in. Any DODO AQUA sensor is a standard Modbus-RTU device on a standard RS-485 bus. The DODO LOGGER, the platform and the app are the fastest route from probe to dashboard, not the only one — the full register map is published below and in the datasheet, and the sensor can be ordered with bare leads for a PLC, DCS, SCADA or paperless recorder.
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