General description The Wireless Doorbell with Motion Detector is an efficient security solution for your home, office, hotel, or shop. It features a simple and fast infrared sensor that detects motion and sends a signal to the receiver, ensuring you are alerted to any activity at your entrance. Technical specifications Detection range: Up to 70 meters Configurable detection delay: 30 seconds Power supply for sensor: Requires 3 AAA batteries (not included) Number of melodies: 38 ringtones Installation Wireless installation; the sensor is wall-mountable Receiver plugs into any standard outlet Usage Ideal for front doors, window frames, driveways, and sidewalks Useful for alerting business owners when customers enter