Toilet Sound Masking Voice Sensor - Model Name: SENSOR SOUND MINI - Function: Voice Sensor - Color: White - Battery Compartment: For AA batteries - Mounting: Wall mountable Thank you for viewing. This item was used in a toilet, but has been thoroughly wiped with disinfectant wipes. The sound volume can be adjusted. Adhesive stickers are attached to the back, but I used it without removing them. There are stains on the backing paper of the stickers, but they are not visible when used on the back. If you don't mind, please consider purchasing.