Enhance your home's entrance with our wireless door bell, designed for long-range connection in multi-story buildings or large residences. Experience stable signal transmission and wide coverage, ensuring you never miss a visitor's arrival. Utilizing self-powered technology, this doorbell converts mechanical pressure into electrical energy, eliminating the need for battery replacements and offering an eco-friendly solution.Installation is simple with our wireless doorbell. Place the receiver indoors and install the doorbell button outside, saving time and effort without the need for complicated wiring. Choose from a variety of melodic ringtones to suit different preferences and add a personalized touch to your home.With all-weather durability, our doorbell is waterproof and dustproof, ensuring reliable operation in harsh weather conditions and extending the product's lifespan. Upgrade your home's entrance with our convenient and stylish wireless door bell.Item Name: Wireless Door Bell Material: ABS Wireless Connection: 433MHz RF Transmitter Distance: 50 Meters (outdoor open space) Transmitter Power: 10dBm Ringtone: 38 Ringtones can be switched, 3 levels of volume are adjustable (short press the music switch button to switch ringtones. Short press the volume adjustment button to adjust the ringer volume) Receiver Power Supply: 90-240V, 50/60Hz Receiver Standby Power Consumption: 0.5W Receiver Rated Power: 2W Battery: Built-in rechargeable battery (included) Features: No wiring required, wireless, easy to use Size Details: Transmitter: 7.1cm x 6.65cm x 2.8cm / 2.8" x 2.62" x 1.1" (Approx.) Receiver: 5.9cm x 4.6cm x 4.85cm / 2.32" x 1.81" x 1.91" (Approx.)Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes: 1 x Doorbell Transmitter 1 x Doorbell Receiver