Didn't hear the doorbell? You will with our wireless chime! Place anywhere in your house (in the basement, laundry, even the garage) so you won't miss a caller. Bell unit (3-1/2" x 2-3/4") plugs into any wall outlet, no wiring needed. Button unit (4-1/2" x 1-3/4") mounts at front door with self-stick pad or screws (both included.). 50 ft. range. Uses 9V battery (not included).