The device automatically raises the internal plunger to its top limit. This relieves all pressure on the plunger between the sensor on top and the valve below. When setup, the app is very usefull for controlling the valve functions.

Box claims potential savings of up to 30% on heating costs due to it's ability to be flexible rather than heating rooms unnecessarily. More importantly helps each family member set the temperature in their own room to a level they find comfortable.

I also like the sleek, white, modern design which i think is elegant, particularly due to rounded edges throughout. An impressive upgrade. Mines mines 1.

They are not too noisy - definitely audible but not too bad. One of the six that i have already bought had a leaky battery which needed replacement.

Works fine and has plenty of adjustments for timings. This does the job nicely. Now the downsides / workarounds:1. See point 2.

There are simpler ways to be more ecologically aware. Controlling the valves via bluetooth is a real limitation. The valves will not link to any other smart home devices such as a smart home thermostat. The valve profiles make no difference.

It's not the sleekest or prettiest of devices. Don't buy until app is fixed. That makes buying a bluetooth version pointless.