The Wireless Door Chime Open Contact Sensor Alarm is a modern, square-shaped door chime designed for home use. It features a 500ft range with 58 chimes, making it suitable for various situations. The chime is battery-operated and constructed with black plastic material, providing a sleek and stylish look. Its wireless connectivity allows for easy installation without the need for costly wiring. Ideal for home improvement projects, this door chime offers convenience and security with its open contact sensor alarm feature.