ELPA (ELPA) Battery-Free Wireless Chime, No Installation Required, Waterproof, Self-Powered by Pressing the Button, WC-S6040AC

[Wireless and easy installation] Simply plug the receiver into an outlet, and the transmitter generates electricity when pressed, so no batteries are required. This wireless chime can be used in a variety of situations, including at home and in nursing care. [No need to worry about running out of battery] Pressing the transmitter button generates electricity, causing the internal coil to emit radio waves. The chime rings when the radio waves are received. [Suitable for a variety of situations] There are 8 chime types available. The radio waves have a line-of-sight range of approximately 90m. Ideal for calling and announcing notifications in homes, stores, and offices. [Waterproof] This push button is rainproof (IPX4 splashproof) and can be used outdoors. Perfect for use at entrances and stores. [Product Details] Power Supply: Receiver: AC100V 50/60Hz; Pushbutton Transmitter: Generates power with push force (no batteries required); Volume: Approximately 85dB/50cm (maximum volume); Frequency: 314.8MHz (specified low-power device); ID Code: Approximately 1 million possible combinations [Wireless and Easy Installation] Simply plug the receiver into an outlet, and the transmitter generates power with push force, so no batteries are required. This wireless chime can be used in a variety of situations, including at home and in nursing care. [No Battery Life Worries] Pressing the transmitter button generates electricity, transmitting radio waves. The chime sounds when the radio waves are received. [Suitable for Various Situations] There are eight chime types available. The radio wave has a line-of-sight range of approximately 90m. Ideal for calling and alarming purposes in homes, stores, and offices. [Waterproof] This pushbutton is waterproof (IPX4 splashproof) and can be used outdoors. Ideal for entryways, stores, and other locations. Product Details: Power Supply: Receiver: AC 100V 50/60Hz; Push-Button Transmitter: Generates power with the force of the button press (no batteries required); Volume: Approx. 85dB/50cm (maximum volume); Frequency: 314.8MHz (specified low-power device); ID Code: Approx. 1 million combinations