•【Versatile Door Chime】The M8 Wireless Door Sensor Chime is ideal for welcoming guests and alerting staff to entries and exits •【Customizable Melodies】Select from 60 different melodies to match the atmosphere of your business environment •【Adjustable Volume】Offers 5 volume levels to suit the acoustics of your space •【Long-Range Connectivity】Provides up to 300 meters of wireless range in open areas for reliable signal transmission •【Easy Installation】Features a split design with compact door magnet and separate receiver for flexible placement Specifications: • Product Model: M8 • Music Options: 60 • Volume Levels: 5 • Door Magnet Size: 64mm x 39mm x 14.5mm • Receiver Size: 56mm x 56mm x 20mm • Door Magnet Battery: 12V 23A (included) • Receiver Power: AC 100–240V (plug-in) • Wireless Range: Up to 300 meters in open line-of-sight conditions (based on factory testing) • Material: ABS Package Included: • 2 x Transmitter • 2 x Receiver • 1 x Installation Kit • 1 x English User Manual