Description Communication range between the infrared sensor and receiver is up to 100 meters (fair game). Alarm system with a total of 38 different ring tones to greet your guests. 3 levels of volume control: Loud, Medium, Quiet. 2 alert mode: Ring tone + LED lighting or only LED lighting. . The range of the sensor is 3 to 7 meters vertically and 3 to 5 meters horizontally. . Sensor supply operation: 3xAAA batteries or 5V USB power supply (not included), receiver supply Operation: DC 110V 240V or 5V USB power adapter. . Receiver dimensions: 76x80x33mm, sensor dimensions: 80x59x45mm. Perfect motion detector Alarma for windows, doors, garage doors or the like and therefore fits in the home or shop