WPD-A4 mini with OLED display, spirit, pH + redox built-in model, peristaltic pump

The system is specifically designed for the needs of whirlpools and swim spas.

It enables precise and fully automatic water treatment – completely eliminating the need for daily manual adjustments.
Particularly in small water volumes, as commonly found in whirlpools and swim spas, its compact design ensures efficient dosing and monitoring of water quality.

Product Overview

• Compact built-in dosing system: Operated with just one button – probably the smallest system of its kind on the market.

• Flexible application: Can dose either pH and chlorine or pH and active oxygen – you choose the dosing strategy.

Scope of Delivery

• Housing (transparent, matte edge; UV-stable polycarbonate)

• Electronic control and regulation unit with OLED color display

• pH and Redox sensors

• Two peristaltic pumps

• Calibration fluid for pH and Redox

• Test strips for pH, free chlorine, and carbonate hardness

• Mounting material, user manual, and optional mounting stand for the measuring unit

• Additional accessories: 5-liter liquid DuoChlorin container, 3-liter pH-minus container, and a Wi-Fi internet module for remote monitoring

Technical Data & Application

• Measurement and control technology: Electronic, with flow monitoring via proximity sensor

• Dosing control unit dimensions: Approx. 110 mm x 58 mm x 45 mm

• Voltage: Input 230V/50Hz, output 12V DC

• Energy consumption: Approx. 3 watts per hour (for a water volume of approx. 1000 liters)

• Application area: Ideal for swim spas, whirlpools, and pools up to approx. 100 m³

• Standards: Based on DIN 19643, ensuring safe and effective chlorination with automatic pH regulation

Advantages & Features

• Automated water treatment: Eliminates the need for daily manual adjustments, as the system continuously monitors and regulates water parameters.

• Remote maintenance & monitoring: Settings can be adjusted remotely via Wi-Fi (using a smartphone or PC), and the water quality status can be checked at any time.

Experience & Expertise

We have been developing and manufacturing water treatment systems for whirlpools, swim spas, and pools up to 100 m³ for over 20 years – Made in Germany!

There are various methods for water treatment, including electrolysis, active oxygen, and chemical additives. However, these approaches do not always achieve the desired results for clean and hygienically safe water.

Chlorine remains the most reliable and effective method for water disinfection. To ensure optimal chlorination, automatic pH regulation and water hardness adjustment are essential.