SadoTech Voice Alert Motion Sensor Doorbell with Recordable Audio, Alarm, or Ding Dong, Caregiver Alert Voice Reminder AS SEEN ON BUSINESS INSIDER, FOX, ABC, NBC & CBS News - "It's built well, and it has a nice minimalist style" - Business Insider, 08/21/15. Our doorbells are great looking, loud, and reliable. A unique doorbell with motion sensor activation and customizable audio recording alarm feature. Three sound options include 1) Ding Dong sound 2) Recordable content and 3) an alarm sound Many creative uses for this doorbell including: 1) great voice alert reminder as an elderly senior enters a room 2) activate a voice alert as you leave or enter the house, 3) alert a shop owner when a customer enters the store, 4) trigger an voice reminder to close the lights as you leave a room, and so much more ! The audio recording feature allows recording of an audio clip of up to 20 seconds. Playback of the recorded audio is initiated when the motion sensor is triggered. NOTE: To record a clear and loud custom audio sound, speak closely and DIRECTLY into the pinhole recording hole for a clearer and louder recording quality. Powered by 4 x AA 1.5V alkaline batteries OR with DC 6V adapter (not included). DOWNLOAD OUR "10 MORE WAYS TO USE SADOTECH DOORBELLS GUIDE - Did you know that our customers use SadoTech doorbells to train dogs, teachers love using it to quiet down classrooms, seniors and disabled use SadoTech doorbells as assisted living call pagers, and more! SCROLL DOWN on this page to the Technical Specs section below and click the Application Guide link to DOWNLOAD the PDF file. Open it with Adobe Acrobat Reader.