With a range of up to 1000m you won’t miss your visitors’ call when you have the Byron portable wireless door chime BY201F in your home. Just place the receiver in a position where you can easily hear it, or move it around your house. There is a volume control on the receiver that also includes a flashing light – if just by chance you don’t hear it. You have a choice of 6 melodies, including a tubular Westminster chime. Bell push battery supplied. Chime requires 2x AA batteries (order 1x 100-4179).