Parking Assistance Garage Car - Laser Guidance

Is there a UK mains adaptor that would service this unit? The laser uses too many batteries to make is a useable item.

So easy to fit and use - no longer any need for the tennis ball on a length of string that is always in the way when the car is out of the garage. Not sure on longevity yet as only had for a week.Will be buying a second so that I have a choice of driving into the garage in both forward and reverse directions.

The PIR is hit and miss and sometimes does not sense movement of vehicle entering garage.