Long operating distance With a reliable wireless range of 150m / 500ft and a strong penetration of the signal, the bell will never fail to alert you when someone comes to the door. Enjoy a reliable and hassle-free doorbill system in factories, offices, classrooms, apartment buildings, villas and other large spaces. 45 melodies at Choose You can choose from 45 different musical chimes, choose a different each The wireless doorbell also has an adjustable volume with 4 levels from 0 to 90dB to meet your needs. IP44 Waterproof and dustproof The transmitter with protection index IP44 waterproof to Dust and water at a working temperature of -20 65, no need to worry about difficult weather, sun, rain, snow, gel, etc. Auto-powered Remote Button When you press the ring of the ringing transmitter, it converts the kinetic energy into an electrical signal that rings to your wireless door. No battery required. Mute mode The silent volume level provides a notification without disturbance, do not fear that the doorbell receiver sounds to disturb a baby who sleeps or a hearing impaired person . LED indicator The pleasant ringer as well as the LED flash when you press the transmitter and a signal is received. A flashing light with o alert indicators is easy to notice for the hearing impaired. Easy to use Simply glue the wireless doorbell next to your door using your door. Double-sided adhesive tape provided or use the screw to secure the cover to the wall. Then connect the receiver to a power outlet. Compact and elegant design The wireless doorbell adds an elegant finish key to your decor. Its sleek and modern look allows it to find its place in all environments. Best gifts widely used for home, office, hotel, villa, hospital, office, apartment, apartment, School and other appropriate areas. And these are the best gifts for your family, your friend and your lover. Ideal for hard of hearing people.