\u2022\u3010Versatile Door Chime\u3011The M8 Wireless Door Sensor Chime is perfect for welcoming customers and notifying staff of arrivals and departures \u2022\u3010Customizable Melodies\u3011Choose from 60 different music options to set the perfect tone for your business environment \u2022\u3010Adjustable Volume\u3011Features 5 levels of volume control, allowing you to set the ideal sound level for your space \u2022\u3010Long-Range Connectivity\u3011Boasts an impressive 300-meter straight-line range in open areas, ensuring reliable performance even in larger establishments \u2022\u3010Easy Installation\u3011Split sensor design with a compact door magnet and separate receiver for flexible and convenient setup Specifications: \u2022Product Model: M8 \u2022Music: 60 musics \u2022Volume: 5 levels \u2022Door magnet size:64mm*39mm*14.5mm \u2022Receiver size: 56mm*56mm*20mm \u2022Door magnet sensor battery: 12V 23A battery (included) \u2022Receiver: plug-in use (AC 100-240V) \u2022Remote control distance: 300 meters in a straight line on the \u2022open ground (data from the factory laboratory) \u2022Material: ABS Package included: \u20222 x Transmitter \u20221 x Receiver \u20221 x Installation Kit \u20221 x English User Manual