Product Overview: The Terminator Digital Doorbell provides convenient operation with a sleek design, it is ideal for homes and offices. Easy to install, ensuring you never miss a visitor Key Features: ‣ Wireless design ‣ Multiple chime options and adjustable volume ‣ Extended wireless range for large spaces Technical Specifications: ‣ Dimensions: 10 x 6 x 3 cm ‣ Wireless Range: 150m ‣ Material: Plastic ‣ Control Type: Button control for chime selection ‣ Performance: 36 chimes, adjustable volume up to 85dB, 3 AAA batteries for the receiver