The communication range between the infrared sensor and the receiver is up to 100 meters (fair game) 3 levels of volume control: loud, medium, quiet; 2 Alarm mode: ringtones + LED display and LED display. There are a total of 38 different ringtones to greet your guests. The range of the sensor is 3 to 7 meters vertically and 3 to 5 meters horizontally. Receiver dimensions: 76x80x33mm, sensor dimensions: 80x59x45mm. Perfect alarm system for windows, doors, garage doors or the like and therefore fits into the home or store Sensor power supply operation: 3 AAA batteries or 5 V USB power supply (not included in delivery), receiver power supply operation: DC 110 V - 240 V. 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 power supply operation: 3 AAA batteries or 5 V USB power supply (not included in delivery), receiver power supply operation: DC 110 V - 240 V. Scope of delivery: 2x sensors 1x receiver 1x kit of mounting accessories 1x instruction manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.