General description This wireless doorbell features a strong signal that can transmit up to 300 meters in open spaces, ensuring you never miss a visitor. It includes two receivers and is designed to operate without interference from other devices in your home or neighborhood. Technical specifications Transmission range: up to 300 meters Volume levels: 4 adjustable levels (25db to 85db) Melodies: 36 built-in melodies Waterproof rating: IP44 Installation Plug the receiver into an outlet Attach the transmitter to the wall or door frame using included tape or screws No cables required for installation Usage Memory function for sound and chime selection Blue LED indicator for visual notification Ideal for homes, offices, and hotels