Ultra-wide wireless range of 400 M / 1,312 FT: Includes two plug-in chime receivers; does not interfere with other devices in your home or your neighbors' homes; Thus, even if you are a few rooms away or in another location, you can be assured that you will not miss any visitors. 52 ringtones to choose from: The chime receiver offers rich sound and clear tone; five adjustable volume levels with a maximum volume of 115 dB; press the next or previous button to easily select from 52 tunes. High-performance transmitters: Extremely low power consumption; The doorbell button of the doorbell set uses a CR2032 lithium battery, which provides a 3-year battery life; IP55 dust and water resistance; Operates at temperatures from -20°C to 60°C; can even withstand the harshest weather conditions. EASY SETUP: The wireless doorbell kit can be easily installed by fixing the doorbell button to the wall, no wiring required; includes two screws, two anchors, a key, and a piece of double-sided adhesive tape. Simply plug the plug-in receiver into an outlet. Memory function: The doorbell chime remembers your last selected melody and assigned volume even after a power outage; You don't need to reset the previous settings; The practical and user-friendly design enhances your user experience. Main material relative to the total product weight: Plastic Color family: Black Place of use: OutdoorDoorbell - black *1