High-sensitivity motion sensor for monitoring baby's safety. Used for about six months. The hook marked with a red circle in the fourth photo is missing, but I was using it by running the sensor wire from the crib and placing the switch on the floor. Although parts are missing, it's still usable, so I'd like to give it away to someone if you're interested. - Brand: babysense - Model Name: home - Function: High-sensitivity motion sensor - Included items: Instruction manual - Design: Compact and simple design Thank you for looking.