Modern and Contemporary Wireless Door Chime. Never miss anyone at the door with a Fosmon WaveLink wireless door chime. The wireless and portable design allow you to install the wireless door entry alert in any section of your home, or business. Magnetic Door or Window Sensor. The magnetic door and window sensor activates when separated. It transmits a signal to the receiver and alerts you with every time the door or window is opened. Easy installation. The receiver for your wireless door chime plugs into any standard outlet. Plug it in and pair your devices. Place your magnetic door sensors with the included double-sided tape and in seconds you are ready to use your WaveLink wireless system. Unique Ringtones with Volume Level. With 58 unique ringtones and 5 volume levels (including mute), you can personalize your wireless door entry alert to your preference. Set it as a pleasant doorbell chime, or as a loud door alarm. LED Indicator for the Hearing Impaired. WaveLink wireless door alert features a LED indicator that creates a visual LED alert, allowing the hearing impaired to take advantage of the system. WaveLink Expands to Your Needs. Each receiver can be paired to 10 transmitters, and vice versa. Specifications:. Receiver Voltage: 110V AC. Transmitter Battery: 23A 12V Alkaline Battery. Power consumption: