•【Versatile Door Chime】The M8 Wireless Sensor Door Chime offers a professional welcome and farewell solution for businesses, with 60 music options to choose from •【Adjustable Volume】Features 5 levels of volume adjustment, allowing you to set the perfect audio level for your environment •【Wide Detection Range】Infrared sensor detects movement from 2-7 meters away (depending on humidity) with a 110° left and right sensing angle for comprehensive coverage •【Long-Range Connectivity】Boasts an impressive 300-meter straight-line remote control distance in open areas, ensuring reliable operation even in larger spaces •【Easy Setup】Receiver plugs directly into any standard AC 100-240V outlet for quick and simple installation Specifications: •Product Model: M8 •Music: 60 musics •Volume: 5 levels •Sensor sensing distance: 2-7 meters (depending on humidity) •Sensing angle: 110° left and right •Sensor: powered by 3*AAA battery or power cord (not included) •Receiver: plug-in use (AC 100-240V) •Remote control distance:300 meters in a straight line on the •open ground (data from the factory laboratory) •Material: ABS Package included: •1 x Transmitter •2 x Receiver •1 x Installation Kit •1 x English User Manual