In Harry Potter and the Philosopher's Stone, Dumbledore uses the Deluminator (then referred to as the Put-Outer) to darken Privet Drive, where the Dursley family household is located.It was next seen in Order of the Phoenix where Dumbledore loans the Deluminator to Moody, who uses it when transporting Harry from the Dursleys' home to Number 12, Grimmauld Place.
(In the film version, this incident is not referred to.) Dumbledore sends Harry's aunt, Petunia Dursley, a Howler in Harry Potter and the Order of the Phoenix to remind her of the agreement to allow Harry to live at Privet Drive when Harry's Uncle Vernon attempts to throw him out.(This incident is not referred to in the film version.) In the film Harry receives a Howler from Mafalda Hopkirk to announce he has been expelled from Hogwarts for using underage magic outside school and his wand is to be broken.The cloak is less effective against some animals, such as cats (e.g. One of these was borrowed by Sturgis Podmore in the course of work for the Order of the Phoenix. possessed one as well, which he used to hide his son Barty Crouch, Jr.to prevent him from going to Azkaban, the wizarding prison.In Half-Blood Prince, Dumbledore uses the Deluminator again to darken Privet Drive before collecting Harry.
In Deathly Hallows, it is bequeathed to Ron by Dumbledore.A Deluminator is a device invented by Albus Dumbledore that resembles a cigarette lighter.It is used to remove or absorb (as well as return) the light from any light source to provide cover to the user.In Harry Potter and the Order of the Phoenix, Hermione Granger creates fake, enchanted Galleons that are used for communication between members of Dumbledore's Army.Like real Galleons, the coins have numerals around the edge; on normal Galleons these serial numbers aren't used the same way the enchanted coins are used, the numbers represent the time and date of the next meeting, and automatically change to match whatever numbers Harry Potter sets on his coin.Due to the coins being infused with a Protean Charm, once Harry Potter alters his, every coin changes to suit.