Rubik Wireless Doorbell with 36 Chimes, 4-Level Volume, 300m Range Battery Operated 

• Rubik wireless door bell push button can be fixed to the door frame with screws or attached using double-sided adhesive tape and the chime simply plugs in, it really is plug in and play.
• Doorbell push button is battery operated (23A12V provided) and also waterproof, it is strong and stable with a huge wireless 300m range, this ensures that you will never miss any visitors even if you are in a big house with several rooms.
• With Integrated speaker for loud and clear sound and has 4 volume controls 20-80 db, 36 chime selections.
• Memory function makes Rubik wireless door bell remember the last ringtone and volume, no need to reset even if after a power outage.
• Package Includes: 1 x Rubik wirless door bell kit with 1 receiver and 1 button, Perfect for multiple uses such as home, office, garage, store, office, apartments, villas, garden, hospital, school, etc