THIS IS HOW CAT FLAPS OPEN ONLY TO CATS - Maddie's Do You Know? 👩

👩Join Maddie as she finds out how things work!
As seen on CBeebies: www.bbc.co.uk/...
Maddie meets some furry friends. She uses special cameras to find out how a digital cat flap works and how a tiny microchip unlocks the cat flap so the cats can go in and out of the house.
Maddie's Do You Know? is a series for young children in which sees Maddie Moate explores the workings of everyday objects, by asking how they are made or how they work?
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