Thank you for viewing! ● Product Information No wiring required! A very user-friendly and stylish wireless chime! Simply install the transmitter in your room or at the entrance, and place the receiver wherever you like. ● Size (approx.) Transmitter: 5 x 7.5 x 2 (cm) Receiver: 6.5 x 9.5 x 2.5 (cm) ● Transmission Distance Up to approximately 50m ● Melodies 36 types (including "ding-dong") ● Volume 4-level volume adjustment ● Power Supply Transmitter: 12V23A battery (included) Receiver: 3 x AA batteries (sold separately) ● Installation Transmitter installation: Fixed with double-sided tape (included) ● Set Contents Transmitter x 1 Receiver x 1 Double-sided tape x 1 (for fixing the transmitter) Screws x 2 (for simple wall mounting of the receiver) ● Notes This product is for notification and communication purposes only and cannot be used for crime prevention or emergency calls related to life-threatening situations. #Arushops Product Page Please take a look at other products from this tag if you like ( ¨̮ ) ※※※※※※Price is not negotiable.