Modes Motion Alarm: Not only works as a motion detection alarm, but also has other functions. Welcome/Door/Alarm/Colored Light/Lighting Modes. Motion detectors are essential in home security systems. The doorbell can detect motion in surrounding areas - driveways, front porches, gates, homes, sheds, offices, sidewalks, swimming pools, shops, etc. and send out alerts to linked receivers. 36 Ringtones and 5 Welcome Doorbell Languages: 5 welcome languages can be selected in Welcome mode. 36 ringtones can be selected in Door mode. Welcome/Door/Alarm mode has adjustable volume. Colored light/lighting mode is silent with adjustable brightness. Perfect for people with hearing impairments or if there is a sleeping baby at home. The colored light model also has 4 colors to choose from. Sensitive and Wide Wireless Range: The motion door entry alarm doorbell for commercial stores can capture motion within a wide range of spaces, and the working range between the receiver and the motion detector is up to 280 meters/918 feet. The detection range of infrared is about 2-8 meters/7-26 feet, which can keep you informed and safe at all times. You can put the motion detector on your porch, gallery or mailbox, and put the receiver in your home. Expandable Wireless Home Security: Flexibly designed according to your actual needs. You can choose the number of transmitters and receivers you need, they can be freely matched and set special lights or ringtones with each other. Each receiver of this motion alarm for seniors will sound an alarm, which can be used with up to 32 motions and 8 remote controls. Although the Wireless Doorbell Entry Alarm Commercial is suitable for outdoor applications, please note that it is not waterproof. Easy to Install and Use: The wireless door can be used by connecting a USB port or installing batteries (the infrared requires three AAA batteries and the receiver requires three AA batteries) to make it work. Both the infrared and the receiver have a mounting base. The motion door can rotate 360 degrees from left to right and 180 degrees from top to bottom. It is very easy to install and can be rotated to any position you need.