Maid, Attendant, Caregiver Call System (Case Dimension: 17x28 cm) Each room has a wireless remote control. As soon as the remote control is pressed, the room number display flashes on the panel near the maid or person on duty. In addition, the officer is also warned audibly. There is a button on the main panel that will reset all calls. It stores the previous calls by scrolling them to the bottom line one by one, with the last call at the top. It is a single-control system, it can be added from the Number of Controls section. Panel Dimension: 17x28 cm Our products are our own production and are guaranteed against manufacturing defects for 2 years.