Motion Sensor: The motion sensor activates when movement occurs within 16.4ft range x 110. This transmits a signal to the plug-in receiver and alerts you with a ringtone every time the sensor is activated by motion. Wireless Plug-in Receiver: The wireless plug-in receiver plugs into any standard 110V or 220V outlet. Unique Ringtones with Volume Level: You can personalize your doorbell with 58 unique ringtones and 5 volume levels. Built-in LED Indicator: The receiver and transmitter feature LED indicators that create visual alerts for the hearing impaired. Easy to Install:Wire free and easy to install. Versatility: Each receiver can be paired with up to 10 transmitters, and each transmitter can be paired with up to 10 receivers. Specifications: Receiver voltage: AC110V~220V,50/60Hz Battery: 1.
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