Yes! The Easy Fit Ultra Syphon has the same dual flush functionality as modern “drop” valves.
Whilst the Easy Fit Ultra Syphon does not require more force to activate than modern drop valves, it may feel different. This is due to the type of activation. However, lifting the bell housing up (remembering to adjust the water level and button if needed) can help reduce the force required to activate the syphon.
The Easy Fit Ultra Syphon is compatible with close-coupled exposed ceramic cisterns only and is not suitable for use with high or low level systems.
Raising the water line may be needed if the bell housing position was raised during installation. As long as the water line sits 100mm below the top of the syphon mechanism as shown in the installation guide, you will not be flushing a larger amount of water.