Thank you for viewing. Wireless Nurse Call System for Home Use Wireless Elderly Pregnant Women Disabled Patients SOS Call Button [3 Transmitters (Battery) + 2 Receivers (AC Plug)] - Type: Wireless Call - Quantity: 2 Receivers and 3 Transmitters - Power: AC Plug Type - Application: For SOS calls for the elderly and disabled I used this so that my family could be notified even if my elderly mother, who lived on the first floor, fell or had an accident, even if the family was on the second floor. Now that my mother has entered a nursing home, I am putting this up for sale. This nurse call system requires no wiring and allows for easy wireless calling. There are also 3 transmitters, so I placed them in the bed, hallway, and toilet so that she could call from anywhere. I also placed receivers on the second and first floors so that the family could know when a call was made, no matter where they were. I don't see any particular stains, including on the cords. I will also send batteries, so you can use it immediately by plugging the receiver into an outlet. Please see the photos for details on how to use it. Thank you.