Voice Prompt Function: The door chime includes a voice prompt feature with 18 selectable prompts and the option to record your own message. This allows you to greetings for visitors and adapt communications to your environment. Doorbell Function: In addition to voice prompts, the unit works as a doorbell with a variety of doorbell music. It supports easy switching between tunes and adjustable volume to suit different spaces and noise levels. Alarm Mode: The wireless door chime offers an alarm mode. It converts audio into a loud audible alarm when triggered by the infrared sensor, designed to deter a thief if an entry is detected. Easy to Install: Designed for business entrances, the door chime can be placed directly on a counter or shelf, or mounted to a wall with screws (not included). Practical applications Retail storefront: Use the voice prompt to greet customers with a custom message, select a doorbell tune that fits your 's ambiance, and adjust the volume for a clear cue without disrupting the environment. Activate the alarm mode if you want additional deterrence when the store is unattended. Office reception or service desk: Employ the voice prompts to guide visitors through checkin, use different doorbell tunes for various entry points, and set the volume to be audible without being disruptive. Installation can be completed quickly on a desk or wall area near the entry. Small warehouse or back entrance: Mount the unit near a back or side entry to provide an audible alert when someone approaches. The infrared sensor can trigger the alarm mode to deter unauthorized entry, helping secure the premise.