SURFOU Doorbell,Wireless Doorbell Battery Operated Button 2 Plugin Receivers 1300ft Remote Range Waterproof Door Bell Kits with 55 Chimes 5 Volume Level Flash LED Doorbells for Home Classroom,Black

[Delivery Content]-2 plug-in receivers, 1 button, 1 doorsign, 1 12V23A batterie, 1 set of screws, 1 screwdriver, 2 double-sided tapes, you can install it completely within the 30s. Just plug the receiver into the power source, plug and play
[Wide Wireless Coverage]-The doorbell operated at 1300ft ultra-long distance and stable wireless signal to ensure a reliable connection, even in other rooms or floors, you can clearly hear the doorbell
[High-performance Doorbell]-The dust and waterproof door bell button adapt to various climates in different regions of the Canada, and the operating temperature is -22 °F to 158 °F. The button is battery powered, battery
life: 3 years. The receiver energy consumption is extremely low, less than 1 kWh per year
[55 Chimes & 5 Volume]-This wireless doorbell for home has multiple choices for you, you can set your favorite music, 0-110dB to meet the requirements of different people
[Extension & Warranty]-You can add additional receivers or transmitters, we provide you with free lifetime technical support and If you have any questions, please feel free to contact us, we will reply within 24 hours.