The communication range between the infrared sensor and the receiver is up to 100 meters (fair game) 3 levels of volume control: Loud, medium, soft; 2 Alarm mode: ringtones + LED display and LED display. There are a total of 38 different ring tones to greet your guests. The range of the sensor is 3 to 7 meters vertically and 3 to 5 meters horizontally. Receiver dimensions: 76x80x33 mm, sensor dimensions: 80x59x45mm. Perfect alarm system for windows, doors, garage doors or the like and therefore fits in the household or shop! Sensor supply operation: 3xAAA batteries or 5V USB power supply (not included in delivery), receiver supply operation: DC 110V - 240V. Product descriptions Color: 2 sensors + receiver Specifications: Communication range between sensor and receiver: 100 meters (fair game) Sensor range: 3 to 7 meters Dimensions: sensor, 80x59x45mm receiver 76x80x33 mmSensor supply operation: 3xAAA batteries or 5V USB power supply (not included in delivery), receiver supply operation: DC 110V - 240V. Scope of delivery: 2x sensors 1x receiver 1x mounting accessories set 1x instruction manual