Thank you for viewing! This is a wireless intercom from Twinbird (TWINBIRD). I'm selling it because I haven't used it, although I've stored it for a long time. I have confirmed that it powers on and receives signals for a short time. This is a very convenient set for conversations between rooms, and for monitoring babies and the elderly. 【Product Features】 • No wiring required: Simply plug it into an outlet (or use batteries) and it's ready to use. • Easy operation: Simple design that allows you to call by pressing the number button. • Versatile: Can be used as a baby monitor, a call bell for nursing care, or for communication in multi-generational homes, etc. 【Set Contents】 • Main unit (or sub-unit) ×2 • Charging stand ×1 • AC adapter ×1 ※ Everything in the photos is included. Thank you for viewing.