Baby Sense Home, a non-contact infant movement sensor. Purchased around March 2025, used from April, but selling as my child has grown. Used until mid-December, alarm confirmed working. Batteries will be removed before shipping. Please understand that this is a used item stored by a private individual before purchasing. Recycled packaging materials may be used. Thank you for your understanding. The shipping method may be changed from Rakuraku Mercari Bin to Yuuyu Mercari Bin, or vice versa. Thank you for your understanding.