M8 Commercial Wireless Sensor Infrared Motion Detector Welcome Doorbell Chime with 1 Transmitter + 1 Receiver - EU Plug/White ???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 ?1 x Receiver ?1 x Installation Kit ?1 x English User Manual