【150m/490ft Wireless Range】 With a strong, penetrating signal, you'll never miss a visitor, even in another room or on another floor of your house. This wireless doorbell kit is suitable for homes, classrooms, offices, apartments, schools, villas, hotels, factories, hospitals, and more. 【32 Ringtones & 4 Volume Levels】 The set features 4 adjustable volume levels, with a maximum intensity of 85dB and a minimum intensity of 25dB (silent), which can be adjusted at any time to suit the situation. You can choose from 32 different ringtones, including a variety of classic tones. These provide a rich and clear sound. The main unit can be equipped with multiple doorbell buttons, each a separate button. 【IP44 Waterproof and Weatherproof】 Thanks to its IP44 waterproof and weatherproof construction, this wireless doorbell is built to last. It operates in temperatures ranging from -10°C/14°F to 55°C/131°F and can withstand various extreme conditions. Don't worry about rain, snow, or extreme temperatures: your waterproof wireless outdoor doorbell will always ring! 【LED Indicator with Silent Mode】 Don't want to be disturbed during a meeting or nap? Perfect for those who need rest or have sleeping children. The built-in memory chip remembers the last setting and doesn't need to be reset after a power outage. 【Easy to Install and Energy Saving】 Plug the receiver into the wall outlet and attach the transmitter to the wall or frame with adhesive tape. The transmitter's battery lasts for more than 2 years. Memory function: You don't need to reset the previous setting after a power outage; the doorbell remembers your last choice. With this wireless doorbell, you can hear it from anywhere in the house. You can choose from 32 melodies and adjust the volume (which can be muted). The receiver also lights up when the doorbell rings. Ideal for the hearing impaired! This doorbell set is completely wireless and therefore very easy to install. The doorbell button also meets the IP44 waterproof standard. Thanks to the smart design, you can easily select the volume and music. Specifications: Color: Black Plug type: European Ringtones: 32 Transmitter power: CR2032 button cell battery Transmitter dimensions: 31 x 72 x 21.14 mm Receiver dimensions: 90 x 60 x 68 mm Range: 300 meters in open space