It finally turned up - Atlas Scientific EZO ph module - not too expensive at £38 and has all sorts of useful features to ensure good readings. Been reading the datasheet and
Diagram showing the sensors connected to the data logger system. Such... | Download Scientific Diagram
EZO TM class
Atlas Scientific EZO™ ORP Circuit | Sensors & probes – Sensors & Probes
esp8266 - Using multiple sensors on the same i2C circuit - Electrical Engineering Stack Exchange
Looking for a waterproof humidity sensor. Does the ezo hum work with the ezo component? - ESPHome - Home Assistant Community
![Dissolved Oxygen [DO] EZO Circuit – Integrated Treatment Systems, LLC](http://www.intreatsys.com/cdn/shop/products/EZO-Dissolved-Oxygen-Circuit-02.webp?v=1676597730 "Dissolved Oxygen [DO] EZO Circuit – Integrated Treatment Systems, LLC")
Dissolved Oxygen [DO] EZO Circuit – Integrated Treatment Systems, LLC
EZO™ Dissolved Oxygen Circuit | Atlas Scientific
The EZO-pH™ Embedded pH Circuit | Atlas Scientific - YouTube
Playing Around with Atlas-Scientific's EC-EZO Breakout Board | bitknitting
EZO™ pH Circuit | Atlas Scientific
Atlas Scientific EZO™ RTD Temperature Circuit - Sensors & probes – Sensors & Probes
MAKE YOUR OWN PH AND SALINITY MONITORING SYSTEM WITH LED INDICATORS : 4 Steps - Instructables
pH Kit
Atlas Scientific EZO™ pH Circuit | Sensors & probes – Sensors & Probes
Atlas Scientific EZO™ pH Circuit | Sensors & probes – Sensors & Probes
Atlas Scientific EZO-DO Dissolved Oxygen Embedded Circuit 0.01-100+ mg/L: Computer Parts And Accessories: Amazon.com: Industrial & Scientific
EZO™ Humidity Circuit | Atlas Scientific
pH Click
Playing Around with Atlas-Scientific's EC-EZO Breakout Board | bitknitting
The EZO-pH™ Embedded pH Circuit | Atlas Scientific - YouTube
![Electroconductivity [EC] EZO Circuit – Integrated Treatment Systems, LLC](https://www.intreatsys.com/cdn/shop/products/EZO-Conductivity-Circuit-03-1.webp?v=1676598421&width=1445 "Electroconductivity [EC] EZO Circuit – Integrated Treatment Systems, LLC")
Electroconductivity [EC] EZO Circuit – Integrated Treatment Systems, LLC
Amazon.com: Atlas Scientific EZO-EC Embedded Conductivity Circuit 0.07 − 500,000+ μS/cm : Industrial & Scientific
Atlas Scientific EZO™ Conductivity E.C. Circuit | Sensors & probes – Sensors & Probes
EZO™ ORP Circuit - Atlas Scientific - Creasis Shop
Circuit Construction | reef-pi Guide 6: pH Monitoring | Adafruit Learning System
![Dissolved Oxygen [DO] EZO Circuit – Integrated Treatment Systems, LLC](https://www.intreatsys.com/cdn/shop/products/EZO-Dissolved-Oxygen-Circuit-04-1.webp?v=1676597729&width=1445 "Dissolved Oxygen [DO] EZO Circuit – Integrated Treatment Systems, LLC")