Byron - DB312 Wireless Portable & Plug In Door Chime Kit 30m - BYRDB312
The Byron DB312 Wireless Portable & Plug In Door Chime Kit has an operating distance of 30m, with a fixed code. Has 1 melody, ding dong.
The Chime requires 3 x AA batteries (NOT included).
The Push requires 1 x 23A battery (included).