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Geyserwise Delta T with Tuya Module Kit


For use in 220V pumped solar water heaters

With this geyserwise intuitive app, you can manage your water heating system more efficiently and safely. It is perfect for homeowners and facility managers who want to optimize their energy usage and ensure operational safety at all times.

Transform Your Geyser Management 

Key Benefits:

  • Remote Control: Turn your geyser on/off and manage settings from anywhere.
  • Temperature Management: Easily view and set your geyser’s temperature to your desired level.
  • Versatile Usage: Perfect for both traditional geysers and thermosyphon solar systems.
  • Smart Scheduling: Use as a timer to program heating times that suit your daily routine.
  • Efficient Monitoring: Track water temperature, time, day, and heating mode through a clear display.
  • Alert System: Stay informed with error alerts from warning code E2 to E9, ensuring your system is running smoothly.

Technical Features:

  • Adjustable Temperature Settings: Set temperatures between 30 – 75°C, with a default setting at 55°C.
  • Multiple Heating Modes: Choose between auto or manual heating for optimal control.
  • Programmable Timer: Customize up to four different time settings per day to fit your schedule.
  • Safety Features: Includes an electronic thermostat with a mechanical thermal cut-out at 90°C. For systems expected to operate above 90°C, adjustments can be made to accommodate higher temperatures.
  • Differential Controller: Ideal for 220V pumped solar water heating systems, enhancing system efficiency.
  • Robust Technical Parameters:
    • Operating Voltage: 230VAC / 50HZ.
    • Relay Contact Rating: 30AMP (Max 4KW).
    • Voltage Range: 220V – 250V AC.
    • Temperature Display: Ranges from 0 – 99°C with specific alerts for high and low temperatures.
    • Temperature Differential Setting: Fine-tune settings from 1°C for precision control.
    • Safety Mechanisms: Includes high temperature warnings, dry heat detection for empty cylinders, and anti-freeze protection from 0° to 10°C.


Download For IOS 

Download for Android


All parts must be installed by a qualified electrical wireman or Master electrician with a valid registration with the Department of Labour. Once installed, a valid electrical certificate of compliance (COC) must be issued. The installation must be compliant with SANS 10142 and ALL its parts. Any warranty claim submitted without installation photos, a valid COC, and proof of a qualified wireman/master electrician installing the unit can be rejected and will render the warranty claim null and void.

Please note that the stock availability displayed on this website is a guideline only and does not guarantee the products’ availability. We make every effort to ensure the accuracy of displaying stock. Stock levels can change rapidly and may not always reflect real-time inventory. Amptex Projects does not hold stock of all the items displayed on the website, and stock may need to be ordered from suppliers. For urgent orders with a time-sensitive deadline, we recommend contacting our customer support team to confirm the availability of a product before placing an order

2 – 3 Day Delivery in Gauteng Only

For deliveries outside Gauteng, please contact us on