Ultra Long Operating DistanceOur wireless doorbell has long distance transmission and high strength signal and sensitivity, the maximum open distance can reach 300m / 984.3ft. This doorbell ensures you to hear and answer the doorbell in time, you will always be easily informed when someone is calling from outside, never worry about missing visitors.Widely Applied & Adjustable SpeakerOur perfect wireless doorbell kit for home, apartment, school, villas, office, warehouses, hotel, factory, hospital and more. The adjustable speaker delivers clear and loud voice, can be used as mobile interphone.Low Power Consumption and Safe UseOur Two-Way Intercom Doorbell has long standby time for outdoor-bell up to six months. Also the frequency of use of this product is in accordance with national regulations and will not cause harmful electromagnetic interference, which is universal worldwide.Easy to Install Just directly stick our wireless doorbell to the wall with adhesive tape. Outdoor-bell pair with indoor-bell by learning its code, 1 outdoor-bell can paired with N indoor-bells and will not interfere with other equipment in your home or those of your neighbors.High Quality and Best GiftOur wireless doorbell is made of the best ABS material, excellent materials keeps itself from getting higher temperature & interference. A stylish modern design with simple and elegant, classical white is the best gift choice for your home and friedns as well as business.