This Byron B304 Wirefree Portable Door Chime kit has a 50 metre operating distance. It provides a choice of two melodies & has volume control. It features self learning codes-will keep the code even when the batteries run out & are replaced. This portable door chime can have up to 2 bell pushes controlling the chime. It has a 80-85dB rating, depending on the sound. Compatible with all Byron B ranges.
The chime requires 3 x AA batteries (not included)
ThePush requires 1 x 23A battery (included).
The BYRB304 Wirefree Portable Door Chime Kit has the following specifications: