Umimile Wireless Automatic Power No Batteries Waterproof and No Installation 38 4 Volume 100dB Light Memory Suitable for Nursing 150M Can Be Heard and

38 Songs, 4 Volume Levels, and Light Alert: When you press the transmitter on this wireless doorbell, the receiver will emit a sound and both lights will flash to alert you. This doorbell offers 38 different songs and 4 volume levels from 0-100dB. You can choose the volume that best suits your preferences and the environment, making it very convenient. [Battery-free & Easy Installation] This self-powered transmitter requires no batteries and generates power only when the button is pressed. This reduces maintenance and replacement frequency, ensuring a long lifespan. Double-sided tape and screws are included for easy installation without the need for wiring. Simply plug the receiver into an outlet, making it suitable for use by children and the elderly. [Waterproof and Dustproof] This doorbell transmitter features a water-resistant and dustproof internal structure, so it can be used outdoors, in the bathroom, or in other wet locations. Even if the doorbell is directly exposed to rain or water splashes, the internal circuitry and components will function normally without being damaged. This ensures a reliable notification device that can be used for a long time. [Stable Reception & Memory Function] This door chime uses a highly sensitive receiver for stable reception through walls. It can be used indoors or in a two-story building. It also has a memory function that can record songs, making it easy to use when moving between locations without having to repeat the process. [Flexible Expansion & Versatile] One transmitter can connect to multiple receivers. One receiver can also connect to multiple transmitters. Transmitters and receivers can be combined in any combination, allowing for 2-to-2, 3-to-2, and more. It's ideal for a variety of applications, including doorbells for visitors, caregivers, and for communicating and paging customers in stores and offices. It's also recommended as a chime for the elderly, children, and those with disabilities. When you press the wireless chime transmitter, the receiver will make a sound and the light will flash to notify you.