Wireless Doorbell Kit EplayTek One Push Button & Two Receiver (1000 Feet Distance ) Wireless Doorbell Kit With 36 Melody Chimes (Blue) DOUBLE RECEIVER for MULTIPLE PLACE : The wireless doorbell kit is ideal for home, large office and building of multi-floor etc, two receivers in the package , you could put in different room or places SUPER LONG WORKING DISTANCE : Wireless Range up to 1000 Feet (300m) in open space. Even there are many obstacles, the operation range can still reach up to 100-500ft 36 CHIME & MELODY OPTIONS : 36Chimes (Including 16 chords).4 levels of adjustable volume from 25db-110db. The two chime units can be configured with different ringtones BLUE FLASH LIGHTHINT : The transmitter button will flash blue light to add the additional alert assistance PACKAGE INCLUDE : EplayTek Doorbell Receiver x 2,Button x 1,Battery 12V 23A x 1,Screws x 2, 3M Double-side sticker x 1, Mini Screwdriver x 1,User Manual x 1,EplayTek Warranty Card x 1