Long Wireless Range - Our wireless doorbells for homes offer a range of up to 150m in open spaces, featuring strong anti-interference capabilities and one-to-one signal pairing. The doorbell's signal ensures you never miss a visitor, even if you're a few rooms away or on a different floor. Perfect for large homes, apartments, offices, and classrooms. You can set it to silent mode and avoid disturbing your sleeping baby. The bright LED flash is ideal for the elderly and hearing impaired. The doorbell has a memory function that saves you time by remembering your last melody selection after powering off, eliminating the need for resets. Easy to Install - Set up and pair according to the instructions, NO tools required. Simply plug the adapter into an outlet and attach the transmitter to the wall using double-sided tape or screws. Satisfaction: Our customers are our top priority. If you encounter any issues with the product after receiving it, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.