4 Pack Vacuum Cleaner HEPA Filters for Cyclonic Series RO3753EA RO3731EA RO3786EA M8 Commercial Wireless Door Magnet Sensor Chime Welcome Visitor Alert with 2 Transmitter + 2 Receiver - EU Plug/Black<br> •【Versatile Door Chime】The M8 Wireless Door Sensor Chime is perfect for welcoming customers and notifying staff of arrivals and departures<br> •【Customizable Melodies】Choose from 60 different music options to set the perfect tone for your business environment<br> •【Adjustable Volume】Features 5 levels of volume control,allowing you to set the ideal sound level for your space<br> •【Long-Range Connectivity】Boasts an impressive 300-meter straight-line range in open areas,ensuring reliable performance even in larger establishments<br> •【Easy Installation】Split sensor design with a compact door magnet and separate receiver for flexible and convenient setup<br> Specifications:<br> •Product Model: M8<br> •Music: 60 musics<br> •Volume: 5 levels<br> •Door magnet size:64mm*39mm*14.5mm<br> •Receiver size: 56mm*56mm*20mm<br> •Door magnet sensor battery: 12V 23A battery (included)<br> •Receiver: plug-in use (AC 100-240V)<br> •Remote control distance: 300 meters in a straight line on the<br> •open ground (data from the factory laboratory)<br> •Material: ABS<br> Package included:<br> •2 x Transmitter<br> •2 x Receiver<br> •1 x Installation Kit<br> •1 x English User Manual