The Terminator TDB004DC Digital Wireless Doorbell is a compact, battery-operated chime system ideal for homes and offices. It features 38 selectable melodies, wireless installation with up to 100 meters of range, and a sleek white and blue design. The transmitter operates on a 12V battery (included), and the unit is easy to mount with no wiring required. Designed for convenience, it delivers a customizable and user-friendly doorbell experience.