58 MELODIES & 5 VOLUME: Doorbell receiver features 58 chimes and 5 levels of adjustable volume(0 dB to 100 dB) to meet your needs for different occasions. Press the Next or Previous button to easily choose from 58 melodies.<br> HIGH-PERFORMANCE TRANSMITTER: Ultra-low power consumption; The doorbell is USB powered, button uses a CR2032 lithium battery that boasts a 3-year maximum lifespan.<br> IP55 WATERPROOF DOORBELL: The housing of the doorbell button is specially designed for outdoor use and is also suitable for all weather conditions. IP55 dustproof and waterproof rating; works between -4 F to 140 F; withstands various harsh weather conditions.<br> MEMORY FUNCTION: Remembers your last melody and volume level after a power outage; no need to reset to your previous settings; convenient and easy-to-use design for an enhanced user experience.<br> 200M OPEN AREA RANGE: Wireless doorbell signal can easily cross through metal doors or walls, ensures you will never miss a visitor, even if you are a few rooms away or on another floor.<br> Feature<br> Multiple pairing combinations<br> Configure according to the size of the family environment<br> The number of transmitters and receivers must no more than 20.<br> 1. USB powered and can be placed arbitrarily. Suitable for use all over the world.<br> 2. 4 unique mode functions: only flash but no sound, only sound but no flash, flash and loud, always bright and flash.<br> 3. Button waterproof grade IP55, built-in waterproof rubber strip, truly waterproof.<br> 4. The button adds a label cover, which can place the house number and other reminders.<br> 5. Add the function of distinguishing front and rear doors, press different buttons, the receiver will play different music.<br> 6. The sound quality is crisp and clean, no noise, and the sound is pleasant to the ear.<br> Note: 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. Sold by-DIMEANI official store