Wireless Doorbell With 32 Chimes, 150m Range, Smart Home Welcome Bell, Colorful. Enhance Your Entryway with This Advanced Wireless Doorbell, Designed to Combine Convenience and Functionality. Featuring Cutting-edge Wireless Transceiver and High-quality Voice Processing Technology, This Doorbell Provides Stable, Reliable Performance. Perfect for Homes, Offices, Villas, and More, It Offers Multiple Functions: a Welcoming Chime, a Doorbell, and an Alarm System. Key Features - Smart Wireless Connectivity: Effortlessly Sends a Signal to the Doorbell to Deliver Immediate Sound Alerts. - Infrared Welcome Mode: Detects Motion and Emits a Friendly Greeting Sound. - Door Sensor Alarm Mode: Alerts You when Doors or Windows Are Opened, Enhancing Security. - Long-Range Transmission: Operates over Distances of Up to 150 Meters (500 Feet) in Open Spaces, Ideal for Larger Homes and Buildings. - Customizable Tunes and Volume: Choose from 32 Ringtones and Adjust to 4 Volume Levels to Suit Any Environment. - Expandable System: Pair Up to 30 Transmitters with Several Receivers for a Customizable Setup. - Easy Installation: Simply Plug in the Receiver and Attach the Transmitter; No Drilling Required. Technical Specifications - Operating Voltage: AC 100-220V - Current: <100 MA - Frequency: 433 MHz - Operating Temperature: -10°C to 50°C - Battery for Button: CR2032 Battery Included (availability May Vary Based on Shipping Location) Upgrade Your Property with a Wireless Doorbell System That Not Only Offers Practicality but Also Enhances Your Security and Convenience..