AcePoint Night Light Wireless Doorbell Series, 2-in-1 Wireless Door bell w/LED Night Light Function w/Dual Receivers (1 plug-in receiver + 1 portable battery operated receiver), Long Operating Range 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. TOUCH OF MODERN LOUD WIRELESS DOOR BELL with LED NIGHT LIGHT and GREAT SELECTION OF 32 REAL DOOBELL CHIMES/RINGTONES (not your cheap tinny sounding chimes like most other doorbells on the market) 100% WATERPROOF IMMERSIBLE BUTTON with LED indicator when pressed EXPANDABLE DOORBELL SYSTEM. Easy MIX and MATCH with more receivers, buttons or sensors. This model includes a PORTABLE BATTERY OPERATED DOOR CHIME RECEIVER and is great for placing anywhere in your home or office or outside while working in the backyard! 450 FEET OPERATING RANGE. LOUDEST CHIMES and RINGTONES with 4 level adjustable volume Includes 1 Push Button, 1 Plug-In Door Chime & 1 Battery Powered Door Chime, double sided sticker, screws, battery for push button is included DOWNLOAD OUR "10 MORE WAYS TO USE sadotech wireless doorbell  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