Wireless Magnetic Alarm Door Sensor Alert Bell Business Entrance Set Chime Entry Modern and Contemporary Design Never miss anyone at the door with a Fosmon WaveLink Wireless Entry Alert Doorbell. The wireless and portable design allows you to install the doorbell in any section of your home, work, retail store, salon, or business.Magnetic Door Sensor The magnetic door sensor activates when the magnetic stripe is separated. This transmits a signal to the plug-in portable receiver and alerts you with a ringtone every time the door is opened.Wireless Plug-in Receiver The portable wireless plug-in receiver plugs into any standard outlet.Unique Ringtones with Volume Level You can personalize your doorbell with 52 unique ringtones and 4 volume levels.Built-in LED Indicator Fosmon's WaveLink wireless doorbell receiver and transmitter features LED indicator that creates visual alert for the hearing impaired.Versatility Each receiver can be paired with up to 10 transmitters, and each transmitter can be paired with up to 10 receivers.The following SKUs are compatible with Fosmon WaveLink Series Receivers, Sensors andDoorbells. 51004HOM 51005HOM 51007HOM 51008HOM 51009HOM 51018HOM 51036HOMUSSpecifications: • Maximum 400 feet or 120 meters operating range in open area • 52 unique ringtones • 4 volume levels • LED indicators • Transmitter battery: 1.5V AA Alkaline Battery • Transmitter power consumption: