theres someone inside your house

The door alarm is battery powered and requires three AAA batteries (batteries not included).

The alarm is listed as 3 in (H) x 4 in (W) x 1.12 in (D). The paperback is listed as 8.5 in (H) x 5.6 in (W) x 0.9 in (D).

The book is classified as young-adult fiction in the horror subgenre and has a suggested age range of 13–19 years.

It can either chime as an alert or sound a loud siren in alarm mode, letting you choose between the two signals.

The alarm includes an adjustable mounting kit, mounting hardware, and self-adhesive strips; mount types listed include adhesive or screw fittings.

The alarm is described as a white plastic device, and the book is offered in paperback format.

Yes. Adult assembly is required and tools are not provided.

The available review summary gives a generally positive impression, specifically noting the book's strong suspense.