KYTGFH Wireless Doorbell Waterproof, No Battery Required, 60 Music Led Blue Light Flashing Reminder Self-Powered Doorbell, 1 Transmitter 2 Receivers/150M Transmission Distance,White

Home wireless doorbell Music: 60 music Volume: 5-files volume (can be adjusted to mute) Transmitter: No battery required, press to generate electricity Transmitter size: 92mm*62mm*32mm Receiver size: 70mm*46mm*20mm Remote control distance: straight line on the ground 150M Please try to avoid placing the product in a place exposed to rain, long exposure, and close to metal objects. Proper use of this product can effectively extend the service life. The actual remote control distance will vary depending on the environmental factors used.